Jul 182017
 

This blog isn’t a tech blog, but I write about Eastgate’s Tinderbox semi-regularly.

To help those of you who are interested in the TBX posts but not necessarily all the rest, there’s now a link to the TBX-only RSS in the sidebar. (Or click here.)

ps—I suppose this is fair warning that the next few posts involve me over-investing in not-fancy TV and movies.

 July 18, 2017  Hypertext Tagged with:
Jul 102017
 

At the same time as I was finishing up work on the new version of my site using Tinderbox, a few threads popped up on the Tinderbox forum talking about the perceived difficulty of Tinderbox export. This got me thinking yet again about the source of all the trouble. At various times and in various moods, I have both agreed export could be a pain and been astonished at how easy it made creating complex documents. Thinking about it again led me to jot down metaphorical thoughts about car dealers and Mad Libs. I also tried to describe what I see as the fundamental difference between TBX’s export and other common tools.

Once I had those ramblings out of my system, I decided to use what I’d learned making my web site file to offer up a short series of posts that tries to show how I’ve come to think about basic export. Obviously there are other examples, instructions and information about Tinderbox available elsewhere. (The TBX help files, Mark Bernstein’s The Tinderbox Way, Mark Anderson’s TbRef,  Welcome to Sherwood, and the videos of Dominique Renaud are only a few). I try not to repeat that work here.

a map of the series

Instead, what I’ll try to do is show how working backwards from the desired output rather than forward from a note is a useful (and manageable) way to think about export. In my opinion, working this way resolves a lot of the difficulty I initially experienced.

Each of the examples in these series will begin by creating a concrete instance of the desired output. Once this instance is written, I show how to transform it into an export template that will generate the same output from any note. I’ll be using the same sample file throughout (download .zip).

You should start with exporting a form letter. All the other examples take the information it provides for granted.

You can find the rest of the examples here:

In the next few days, I’ll close out the series with a few thoughts about what’s involved in exporting to the web.

 July 10, 2017  Hypertext Tagged with:
Jul 092017
 

The last few months I’ve been working on moving this site off WordPress. That meant transferring all the posts to Tinderbox, setting up all the links, and creating the templates that would produce the HTML output I wanted to have. Everything except the templates was donkey work and took days and days. The templates took time as well, but I was learning about export and HTML and that was useful and exciting.

And when I was done, the file worked like magic. All my posts were suddenly arranged in a sensible way based on content rather than chronology. I could build up links (both href and visual) and could write outside the framework of a timeline. I began to imagine ways of writing that involved something I thought of as “portal posts”: single posts that would appear on a blog timeline but which opened into a system of pages—a kind of mini-, discrete hypertext—accessible only by way of that initial post. I wrote the first of these to explain some of what I learned about export. (It looked like this.)

Then I uploaded the site with a welcome message and the first of what I hoped would eventually be many of these portal posts, and almost immediately, I realized I was in trouble.

Continue reading »

 July 9, 2017  Reflections Tagged with: ,
Jun 252017
 

For awhile now, I’ve been working to migrate this site off of WordPress. This has happened behind the scenes and has been slow going. The new site isn’t complete—most of the images still need to be placed for example—but all of the text is there and everything is functional.

What that means is that now I’m sorting out when to make the jump from here to there and how I’ll cope with the inevitable change in permalinks that I lack the skills to deal with invisibly (if that’s even possible).

The rough and still evolving plan as it stands now is:

  1. to place the new version of the site in a subdirectory for a while and to publish a link to it here. This will give me a chance to see if things work for real and for people to see the change is coming. Once the link to the new site is published, all new posts will be published there and this site will go dormant.
  2. to set up the new site to serve the root address and to displace this WordPress blog to its subdirectory. I’d publish a link to the old blog’s location on my new site. The date for the move will be announced here before it happens but will probably be in the week following step one.
  3. to write up a series of posts explaining how and why I’m going to use Eastgate’s Tinderbox to manage the new site.

So major changes and exciting times.

Stay tuned…

 June 25, 2017  Moments Tagged with: ,
Apr 122016
 

A thread on the Tinderbox backstage forum has touched on export and its difficulties. I’ve written here that export is surprisingly easy, and I still think, in practice, that it is. Yet there are real conceptual difficulties that can also make it feel mysterious and intimidating.

I’ve been thinking about export a bit these past weeks because I was so dissatisfied with my explanation of how my grading rubric worked. Rereading what I’d written, I saw that I had never managed to figure out a way to explain how I thought about export. So what I wrote wound up assuming that the person reading already knew much of what I hoped to explain. I’ve been trying figure out what I would have needed to say in the weeks since.

What follows is my tentative list of what I see as my conceptual challenges as I started dealing with export. They are not shortcomings in the export process itself.

Experience

I mentioned this difficulty in the backstage thread, and it’s pretty straightforward: I know how to organize a word document because the arrangement of info on my screen is synonymous with its arrangement on the printed page. My output is organized by my workspace even in programs as flexible as Scrivener: ultimately, the sequence I impose in my binder determines the arrangement of my output document. If I want a different output, I rearrange my workspace.

TBX notes and output don’t march in lock step in the same way. They can (and do in the built-in templates) but the in-doc organization of notes and attributes will often be largely independent of export results. That makes TBX stand out: I can’t think of another program on my computer that divorces workspace from output organization in this way. The separation is powerful but uncommon enough that, when I start a new export, I lack personal examples or comparable experience to draw on and feel adrift (at precisely the moment—“Print!”—when I usually feel done).

Direction

I should say right off the bat, that this problem may actually be simply a misunderstanding resulting from my lack of comp sci training. It’s persistent enough that it feels real though. I’ll explain with an analogy to a stamp action.

Assume I have a note with two Attributes $A and $B with respective values of 1 and 2. I make a stamp with the action $A=$B and apply that stamp to the note. The two Attribute values will now be the same. But will the values both be 1 or will they both be 2? The action’s behaviour is stable and unchanging. So there is a correct answer. (I think it’s 2?) But my point is this: the direction of the equals sign is neither implicit nor obvious. It’s arbitrary, and ultimately, you just have to learn it. Which is fine because I have no natural sense of the direction of the equals sign.

I do, however, have a sense of the natural direction of export. In my experience and in the common understanding of the word, export moves from me (and my data) and toward something (or someone) else. I send a document to my printer, not the other way around. As a picture, my daily experience of printing is:

[ME with my organized info]    ::push:: ==>              [printer]

TBX export feels to me like it works in the opposite direction. I start the process by creating a template, the symbolic image of the output I want. This image is built up by pulling information piece by piece from my notes and then rearranging it for export. As a result, TBX feels like:

[my organized info]       ==>::pull::     [ME organizing a template of desired output]

The shift in direction from pushing to a printer to pulling from notes seems like nothing, but I think it’s at the root of a lot of my uneasiness when I start a new export. Things are flipped over onto their head.*

Templates

Tinderbox hides a very unusual, very peculiar thing under the familiar and innocuous word, “template.”

In most common applications, templates are where you turn for an easy solution. Need some colors that match in a document? Pick a template. Have to write a report and don’t know how to format it? Pick a template. And when you go to choose the templates, you are presented with a preview image. WYSIWYG!

TBX templates are nothing like this. Most obviously, they aren’t pre-fab except in very basic forms included for import. Instead, you make the template you need in order to produce the output you want. This is great and powerful (Oz-level great and powerful even), but different from the common experience.

Less obviously and less trivially, templates:

  • are usually a system of notes (rather than a single object) structured hierarchically using path names;
  • produce output as a collage of your data using instructions that are distributed across the system of notes:  your output is a product of interactions across the system as a whole;
  • represent the desired output symbolically rather than mimetically. This shift from image to symbol is extremely powerful but it makes greater cognitive demands on the person confronted with the symbol. It can be challenging, for example, to understand the connection between the distributed instructions I’ve placed in a template and the output preview visible on the “preview” tab. (I teach literature and see this difficulty “reading through” symbols play out every day in class.)

Taken together, I think all of this highlights that an uneasiness with export may express a pedagogical need rather than a technical failing.

Translating Computer Science

I wouldn’t want any of this to seem to suggest there is anything wrong with TBX export. I don’t believe what I’m describing here arises from technical or interface difficulties (or at least none I could imagine or suggest a solution to). They seem to me to be conceptual.

TBX takes what this layman considers to be high-order computer science concepts and translates them into a tool I can use to great benefit. But translation will only get me so far. Ultimately, I have to wrap my head around how the tool works, and the information I need to do so (HTML, CSS, page-layout concepts, etc.) may be out of scope for a TBX tutorial.

Export is powerful tool and, when I’m done it with, feels like it was technically easy to manage. But an important aspect of that power is completely (and refreshingly) unfamiliar: TBX asks me what I want it to produce and stands ready to make anything and everything that I have so far asked it for. But answering that initial question—what do I want?—positively and for myself (rather than simply selecting from a range of choices) is disorienting because I’m so seldom asked it elsewhere. And so I’m often still wrapping my head around what my answer might be when I sit down to make a template.


*–rereading this it occurs to me that it might be useful to think of TBX as operating a bit like an old newspaper. There’s my workspace which is the newsroom with all the action that entails. But then off to the side, out back maybe, there is layout and the printshop, which together compile, label and produce the day’s paper.

In terms of the analogy, I never actually “export” anything. I’m really just sending the work I’ve got at a particular moment over to the printshop for inclusion in the most recent edition. And that edition will, obviously, be organized according to constraints and goals (page count, ad space, etc.) that have little to do with how work is organized in the newsroom.

 April 12, 2016  Hypertext Tagged with:
Feb 052016
 

This is my final post about my grading rubric, and I’m going to use it to explain how I set up my export template to create comment sheets. But before I do that, I’m going to take a moment and explain why I think export can seem difficult. If you’re not interested, you skip it.

Export Expectations

I’ve commented elsewhere about discovering how simple and flexible Tinderbox export is. I still believe this is true. Yet, every time I sit down to export something new, I find the task daunting. What gives?

I’m convinced the problem is conceptual and arises from the uniformity of the export function in every other application I use. In those programs, export is called “Print” and it functions in a single, predictable way: from top left to bottom right, line-by-line. Most importantly, this export generates a copy of the arrangement of materials visible on my screen. The trade off for this simplicity is that, because document organization and export organization are synonymous, I must organize my document according to the fixed rules of printing. (This is a constraint we all live productively with most of the time.)

Tinderbox does not work in this way. I can organize my notes however I want and from that organization create whatever export file I want. Working in a file and exporting from that file are largely independent process. In a lot of ways that’s a very good thing. Something like my course map wouldn’t be possible if I were constrained by the rules governing “Print.” The cost of the flexibility can, however, feel considerable when the few default export options aren’t enough and I’m confronted with the problem of how to imagine and to create a “Print” that is adequate to my needs.

Oddly enough, I don’t think that the difficulty involved in coming up with “Print” is found in the export code. In my opinion, export code is much simpler than agent queries and action code. So what’s the problem? Crazy as it sounds, I think it’s having to decide what I want to have once my export is complete. I don’t have to do that in MSWord because — like Henry Ford and his Model T — Word gives me one option: a series of 8” x 11” pages printed top to bottom that match what I see on my screen. TBX is no Model T: the available options are seemingly, overwhelmingly limitless and choosing is hard.

Getting Started

My trick for getting past this block is to step away from my computer, to grab a pencil and paper, and to sketch out what I want. Once I know that, I’ve found that making TBX give it to me is pretty easy. And if I change my mind and want to tweak something? That’s usually easy too.

For the comment sheets I was exporting from my rubric, I wanted various note texts and attribute values to be collected and presented in a sensible way. I thought about this in terms of the rubric hierarchy and came up with a structure shown here.

 

What I Need

General Structure

In this image, the yellow box would be summary information, all of which I had stored in the root note of each instance of the rubric. The green boxes correspond to information stored in various attributes of the criteria notes; the blue boxes are my comments, stored as note text in the descriptor I checked while grading. To create this output I’ll use three templates all of which will be based on the basic HTML template provided through the FILE menu.

Before getting started with the templates, I should also mention that my pencil drawing of the comment sheet indicates where in my TBX notes the information I want to export is located. To give a sense of what that means, I’ve taken screenshot of my sample comment sheet and used colored boxes and labels to do the same thing here.

Annotated Comment Sheet

Templates

I import the html templates that comes with TBX and use them to create my starting templates by copy/pasting them as I need to. By the end of this process, each note in the rubric needs to have the appropriate template assigned to it, either directly or by the export code. To assign them directly, you can use either the HTML tab of the inspector (cmd-1 then the tab marked”< >”) or the HTML selector tab above the key attributes in the text pane. (If the selector tabs aren’t visible, you can turn them on with “WINDOW–>SHOW TEXT PANE SELECTOR.”)

t_comment_sheet

My first template is assigned to the root note. It collects and arranges information from this using three basic export codes. These are:

^title^
^value($RubricEssayGrade)^
^text^

^title^ and ^text^ are easy: the first prints the $Name of the note (which my rubric prototypes have already set to the $ExportFileName) and the second prints anything I’ve written in the $Text attribute (which is what is displayed in the text pane). These two codes are special: they pull the information in $Name and $Text without requiring the attributes to be named. For all other attributes, you use ^value()^, placing the attribute name in the parenthesis. In my template, the ^value()^ code will insert the student’s grade for the essay.

If these three terms were simply listed in my template, then the export would be an unformatted list with no context and would look sloppy. To fix this, I add some stock text — a “/100” after the grade and a generic introduction to the criteria comments — and format everything using html tags. My understanding is that most (all?) html tags will be recognized during export, but I only know a few. So I can’t say for sure. Text added to the template will be added to the output as typed. No codes necessary.

Finally, I want the export to include more than the root note of my rubric. So I need to indicate that my criteria notes should be exported as well. These criteria are the children of the root, so I can use the command:

^children^

That one command is enough to tell Tinderbox to include each of the children in the export. And what information about the children will it include? Whatever the child’s export template says should be included. In my template, I assign a template for the children’s export in the export code by adding a parenthesis to the ^children^ command. But if you’ve assigned the correct template to the criteria using the inspector or the HTML selector tab that’s not necessary.

This template will generate the text found in the red, the blue and the first two green boxes in my image above and, assembled, looks like this:

Comment Sheet Template

Comment Sheet Template

t_comment_sheet_category

This template controls the export of the criteria notes. It uses the same export codes as the previous template, and uses similar html tags. The stock text is different and integrates an attribute value in a more interesting way, the path for the template used to treat the criteria’s children has also been updated, but otherwise, it works in exactly the same way.

This template will generate the text found in the pink, the orange, the brown and the last green boxes, and, assembled, looks like this:.

Criteria template

Criteria template

t_comment_sheet_text_item

The final template, which controls the export of descriptor comments is a good example of the daunting/easy paradox of export. On the one hand this template needs to do only one thing: export the descriptor’s note text. To do this requires nothing more than the single export code ^text^. Easy-peasy. (I spice things up by adding the stock text “Your essay: ” before the comments text because I want things to look classy.)

But there’s a hitch: I only want to export the text of the descriptor note I checked when grading. ^text^ on its own will include all the descriptor comments whether I checked them or not. I don’t know how to do that. So it’s off to the TbRef and the user forums because there’s no way to intuit the answer. I know I need an export code that does the same thing as the action code I used when doing calculations, and I have to look or ask until I find it. It doesn’t take long, but if feels harder — and is more daunting — than selecting “Print.” Once I have the command I need — ^if($Checked==true)^ — I add it and everything works.

The resulting template generates the olive box above, and although it has felt like the hardest to make, it is only two lines long and pulls information from only one attribute. So it is actually the simplest and the shortest of the three.

Descriptor Template

Descriptor Template

 

Final Step

In practice, when I’m done grading, I move all the rubrics from out of the student containers and into a new container that, when I export, will be a folder with all of the correctly named comment sheets inside. I batch convert these to pdfs and upload them to my college’s course management system and students can consult them from there.

The one hitch I see in this output is that the default text sizes for the text is large when printed, but I haven’t decided if I want to do anything about that. If I decide I do, I think that all that’s required is a simple html command in the root template. But that said, I’m pretty sure my students reading their comments on a screen rather than on paper which means there’s probably no problem.

 February 5, 2016  Hypertext Tagged with:
Jan 302016
 

Grades are calculated automatically in my grading rubric using attribute values assigned or calculated at each of the three levels of the hierarchy. So to explain how it works, I’m going to start with the lowest level and move up to the highest.

Before I do though, it’s perhaps worth noting that these calculations use the $Checked attribute. If checkboxes aren’t visible in the outline, you can show them by going to VIEW ==> USE CHECKBOXES. Or if you prefer, $Checked can be set as a key attribute in the p_rubric_component prototype.

Descriptors

Basic grade values are established here by selecting one of the available descriptors and ticking its checkbox. If you wish to change the default point value of a descriptor, you may do so by entering the new value in the key attributes. The rule presented in the previous post will update its $Name to reflect the new value.

Two things are worth noting:

  1. Once the grading is done, there should only be one descriptor checked per criterion. The final step in the grade calculation is a simple sum: if more than one descriptor is checked, the student will be awarded points more than once for that criterion, and their final grade will be higher than it should be.
  2. The criteria and final grade calculations that I use assume that each descriptor is evaluated by a point score between 0 and 10. If this isn’t the case for you, you’d have to adjust the calculations.

Criteria

The criteria-note calculations take the point value of a checked descriptor and multiply it by its criterion’s weight to determine the points awarded toward the final grade. (See note on weighting below.)

To generate my weighted grade, I need to multiply the assigned grade — stored in the selected descriptor’s $RubricPointValue — by the criterion’s weight — stored in as the criterion’s $RubricCategoryMax value. The simplified calculation that would seem to perform this multiplication (but doesn’t) looks like this:

$RubricCategoryPointValue=$RubricPointValue(child)*$RubricCategoryMax

This tells TBX to pull the point value stored in the child note (i.e. the descriptor), to multiply it by the criterion weight stored in the criteria note, and to store the result in $RubricCategoryPointValue.

However, there is a problem: each criteria has more than one child. This rule doesn’t care about that and simply calculates the weighted value of the first child, whether I’ve checked that child or not. To make my rubric work, I have to tell TBX that it should use the $RubricPointValue of the child I have checked and to ignore the rest.

Using Mark Anderson’s TbRef, I discovered that the way to do this is to use “sum_if(x, y, z)” which I found very intimidating at first but which I’ve decided is not as complicated as it seems. As I understand it, this command tells TBX to add up numerical values that match a set of conditions (or arguments) laid out in the parenthesis. There are three types of conditions possible, and I’ve labelled them x, y, and z. (I don’t know if all three are required but I use all three of them in my calculation.) What they stand for is this:

  • X tells TBX which notes to look at by indicating a location. For example, I could replace X with “all” and TBX would look at all the notes in my project, but for my rubric, I only need my calculation to consider “children.”
  • Z tells TBX which attribute to look at. In my calculation, I want TBX to see if a descriptor note is checked or not, so I use “$Checked” for the value of z.
  • Y tells TBX what value it’s looking for in the attribute it’s examining. Now I’m sure this argument allows the initiated to do incredible, magical things, but thankfully I only have to ask TBX to look for checkmarks, which is a boolean value — yes/no, true/false — and so, I need nothing more complicated than “$Checked==true”.

Combine these three conditions in a parenthesis, separate them by commas and then use them to update the equation presented above and you have:

$RubricCategoryPointValue=sum_if(children,$Checked==true,$RubricPointValue)*$RubricCategoryMax*0.1

This looks complicated enough to make my heart flutter and my stomach ache, but it works and in a weird sort of way is logical. You just have to work up step-by-step. (…and ask questions.)

Regarding the final term of the equation (“*0.1”): because I use values from 0 to 100 to define criteria weighting, I have to multiply the product of my calculation by 0.1. If I don’t do this, the final grade calculation will report a grade of 88/100 as 880/100. Defining criteria weight with a scale of 0-10 would eliminate this problem, but I prefer thinking of weighting as percentages, which is more natural with a 0-100 scale. Multiplying by 0.1 moves the decimal point to where it belongs.

The Criteria-level Rule

The Criteria-level Rule

This calculation is stored as a rule in the p_rubric_category prototype, which then automatically applies it to all criteria notes in all instances of the rubric.

Final Grade

In my rubric, all the heavy lifting happens at the criteria level. Once the weighted point values are calculated and stored in the $RubricCategoryPointValue attribute, all that’s left to do is to add up these weighted values. To do this I use the “sum(x,z)” command. In this command, X and Z function in the same way as they do above. No Y argument is necessary because the command isn’t evaluating a condition in order to determine which values to add: “sum(x,z)” adds all the values found at the designated location.

As a result, the rule that calculates the final grade is simpler and reads:

$RubricEssayGrade=sum(children,$RubricCategoryPointValue);

The result of this sum — which will always be a value between 0 and 100 — is the final grade of the essay stated as a percentage. It is stored in the $RubricEssayGrade attribute where it is used to set the rubric’s $Subtitle and $HoverExpression.

The Root-level Rule

The Root-level Rule

And that’s it for the grade calculations. In the next post, I’ll explain how I export the rubric as a comment sheet for students.

****

Note on weighting

If all the criteria were weighted the same or if the descriptors awarded points on scales that directly reflected differences in weighting, the criteria-based calculation would not be necessary. The root-level rule could use sum_if(x,y,z) to calculate the final grade directly. However, I choose to use a standard scale (0 to 10) to evaluate all criteria and then to assign the weight for the criteria in a separate attribute.

I prefer using multiple attributes for two reasons. First, the standard scale makes grading easier: I know “7” always means 7/10 (and not 7/15 or 7/20). Second and more importantly, having a separate attribute for the weighting allows me to adjust (and experiment with) the relative weighting of my criteria without out having to continually adjust the individual point values of dozens of descriptors. This makes the rubric much easier to adapt for use in new assignments.

 

 January 30, 2016  Hypertext Tagged with:
Jan 232016
 

In this second post I’m going to go through the prototypes and agents I used to make my grading rubric. When I’m done, I’ll have explained everything that doesn’t have to do with grade calculations or export. (Subsequent posts will take up those topics.) The result is a long post that is predictably schematic. If you’re reading, I’ve assumed you’re interested in nuts-n-bolts.

Before I get started though, I should make clear that, in what follows, when I say “the rubric” I’m referring to a prototype that contains a two level hierarchy. Because my rubric is a prototype (called p_essay_rubric) it sits in the container where I store the rest of my prototypes and appears as an option in the assign prototype contextual menu.

The rubric is a prototype

The rubric is a prototype

When I assign this prototype to a new note, that note automatically duplicates the entire prototype hierarchy, providing an editable copy of the rubric that I can use to evaluate an individual student’s work. I will call these editable copies “instances of the rubric.”

I should also mention that the rubric relies upon seven user attributes, each of which is assigned to only one level of the rubric hierarchy as a key attribute.

User Attributes

The user attributes

Of these user attributes, three of them–$RubricCategoryPointValue, $RubricCategoryMax, and $RubricPointValue–are number values used to calculate grades. The rest hold either sets or strings.

The Rubric Hierarchy

The rubric is organized with three levels of hierarchy.

The Root (“The Rubric”)

The top level of the rubric hierarchy has three key attributes: $RubricEssayGrade, $RubricAssignmentName, and $RubricExportFileName. All of these are set automatically by rules, agents or on-add actions. The $HoverExpression is set to display $Subtitle. (A separate rule sets the $Subtitle to the final grade. See below.) The note’s $Text will be presented as a general introductory comment in bold italics on the exported comment sheet. It is blank in the rubric but can be edited in each individual instance of the rubric. If no comment is entered, the export will insert a stock intro. This top-level note is a prototype and is named p_essay_rubric.

Criteria

The second-level notes identify the criteria used to evaluate the essay. There is one note per criterion.

The criteria in my rubric

The criteria in my rubric

Each note’s $Text contains a brief description of the criterion. When the final comment sheet is exported, this text will be presented as an italicized introduction to the specific feedback. $RubricCategoryPointValue and $RubricCategoryMax appear as key attributes. $RubricCategoryPointValue is calculated by a rule, but $RubricCategoryMax is set manually and establishes the relative weight of the criteria in the calculation of the final grade. (A value of 5 assigns the criteria grade a weight of 5% in the final grade.) Criteria are assigned the prototype p_rubric_category.

Making Revision to the Criteria: Evaluation criteria will likely change when the assignment or the course changes, and so both the number of criteria and their descriptions are fully editable. However, as I have set things up, the grade calculations assume that the sum of the $RubricCategoryMax values across all the criteria will equal 100. To ensure calculations are correct, any changes to the number of criteria or to the max value of individual criteria should be accounted for in changes to other notes’ $RubricCategoryMax attribute. Although $Text descriptions of the criteria can be edited freely, once I have begun grading I do not touch them so that each student’s instance of the rubric will match all the others.

Descriptors

The bottom level of the rubric hierarchy contains descriptors attached to point values. You grade an essay by selecting one descriptor within each criteria by ticking it’s checkbox. $RubricPointValue and $RubricCompDescriptiveName are set as key attributes. Although each note has a default value for both attributes set by the rubric prototype, they may be edited freely. The $Name of each of these notes is set automatically as a composite of the key attribute values and will be updated to reflect any changes made. The note $Text will be exported as the principal feedback on the comment sheet, and so, descriptor texts are completely flexible.

Sample Descriptors

Sample Descriptors

It is possible to have as many or as few descriptor notes as you like for each criteria. There can even be different descriptors that are assigned the same point value. Descriptor notes are assigned the prototype p_rubric_component.

Prototypes

The rubric hierarchy relies upon four prototype notes:

  • p_student
  • p_essay_rubric
  • p_rubric_category
  • p_rubric_component.

Together these prototypes:

  1. recreate the prototype’s hierarchy of notes for each instance of the rubric;
  2. set key attributes in each instance of the rubric;
  3. set a variety of rules and on-add actions that are used to define consistent attribute values in instances of the rubric;
  4. distinguish between levels of the hierarchy, allowing agents to act upon specific sets of notes;
  5. set rules that calculate grades based on checkbox selections in an instance of the rubric.

What follows is a brief explanation of each of the four prototypes.

p_student

The p_student prototype is not a part of the rubric itself, but I always create instances of the rubric as a child of a student note. (In my course file, I keep one note per student as a record of ID number, email address, etc.) It makes sense to use on-add actions set by the student note prototype to fill in basic attribute values for the rubric.

The first on-add action links the instance of the rubric to a specific student’s work by having the rubric pull its value for $s_LastName from the student note:

$s_LastName=$s_LastName(parent)

By setting this value immediately, I avoid the situation where I forget to label a rubric and can’t figure out to whom the comments should go.

The second action creates an instance of the rubric by setting the prototype of the note I create to p_essay_rubric:

$Prototype="p_essay_rubric";

Finally, I set $RubricAssignmentName:

$RubricAssignmentName="Essay One (Moby Dick)";

This last action has to be updated each time the rubric is used for a new assignment. It could probably be automated somehow, but I haven’t taken the time to figure out how. I don’t mind changing the string manually when I move from one assignment to another. Together, these actions look like this on the action tab of the p_student inspector:

On-add actions for student note

On-add actions for student note

p_essay_rubric

I began this post by pointing out that my rubric is a prototype. This is that prototype, and except for its $Name, it and its descendent are identical to the instance of the rubric I use in the screencapped demonstration included in my last post.

The prototype hierarchy

The prototype hierarchy

This is possible because the attribute $PrototypeBequeathsChildren is set to true for this prototype. Setting this attribute to true means that when a new note is assigned this prototype, the criteria notes inside this prototype—along with their text, their rules, their on-add actions, etc.—will automatically be created inside the new note as well. Because student notes automatically assign this prototype to their children, all I have to do is create a new note as a child of a student note to create complete instance of the rubric.

[Update: if you are thinking about using prototypes to bequeath children in this way, it’s very important that none of those children are prototypes in their own right. Instead, assign the children prototypes that are outside the bequeathed hierarchy. The TbRef entry on prototypes can give additional info.]

This attribute allows prototypes to create notes in a container

Creating notes in a container with a prototype

In addition to setting key attributes, this prototype contains one non-calculation rule:

$Subtitle=$RubricEssayGrade+"/100"

This sets the subtitle to show the final grade as a fraction over “/100.” It could just as easily be set to display it as a percentage labelled “%”. I’ve also set the hover expression of this note to $Subtitle.

I’ll explain the calculation rule in the next post.

p_rubric_category & p_rubric_component

These prototypes are assigned to criteria and descriptor notes respectively and are relatively simple. They set key attributes and identify the notes in a way that can be queried by agents. In addition, p_rubric_category assigns a calculation rule. As with p_essay_rubric, $PrototypeBequeathsChildren is set as true for p_rubric_category. That’s it.

Agents

The final piece of the basic layout is a set of three agents.

a_set_rubric_ExportFileName

The most important of these agents sets the file name that will be used when the comment sheet is exported. The agent queries for the p_essay_rubric prototype and then performs this action:

$RubricExportFileName=$s_IDNumber(parent(original))+"--"+$s_FirstName(parent(original))+"-"+$RubricAssignmentName

In the demonstration I included in my previous post, this action produces the file name: 123456–Brian-Essay One (Moby Dick).

Here’s how.

First off, everything looks simpler if we ignore the parentheses for a moment. If we do, it’s clear that the opening number sequence is being reported as the value of $s_IDNumber and “Brian” is being reported as the value of $s_FirstName. I’ve formatted these two results to make them easier to read by separating them with an m-dash by adding:

+"--"+

I’ve used the same technique to place a dash between my name and the assignment name later on.

Now those parentheses…

I only figured out what to do here with help offered on the TBX user forums (link to thread). Using my agent’s action, I’m going explain what I learned there. To make things clearer though, I’m initially going to ignore everything from my agent except the ID Number.

Consider the following action:

$RubricExportFileName=$s_IDNumber

This action will cause the export file name assigned to a note to be the same as the ID number assigned to that same note. I can’t use this action in the rubric because the student ID number is stored in a student note while the export file name is stored in the rubric. To make the rubric’s export file name use the container’s student ID number, I need to point the action to the information I want in the student note. So I tried doing this by pointing the action toward its parent:

$RubricExportFileName=$s_IDNumber(parent)

Unfortunately, this doesn’t work either. Why? Well, agents work on the aliases of notes that they gather using their query (and not directly on the original note). So when my agent action pulled the ID Number from the parent note, it wasn’t pulling the information from the parent of my rubric. It was pulling it from the parent of the alias created by the agent, which is the agent. And the agent didn’t have any student ID information. What I needed was to point my action not to the parent of the alias but to the parent of the original note. To do this, I need this:

$RubricExportFileName=$s_IDNumber(parent(original))

Make the same changes to the first name attribute, and I end up with an agent that set the needed export file name by pulling information from three different attributes.

Action to set export file name

Action to set export file name

a_set Rubric Component Name & a_set_rubric_Name

The remaining two agents simply maintain note names. The first queries for the prototype “p_essay_rubric” and sets $Name using the export file name:

$Name=$RubricExportFileName;

The second updates the $Name of a descriptor to reflect any revisions to the point value or the descriptive name. It queries for the prototype p_rubric_component and then performs this action:

$Name=$RubricPointValue+”: “+$RubricCompDescriptiveName;

Because the attribute being set by this action is part of the same note as the attributes holding the information it is using, there is no need for parentheses this time.

Wrapping Up

So this has been a long post, and a boring one too I think, but hopefully it lays out the basic strategy I used to make the creation of a specific instances of my rubric more-or-less effortless.

Next time, I’ll explain how I’ve set up the calculations.

 January 23, 2016  Hypertext Tagged with:
Jan 202016
 

Last semester, I spent a few weeks creating an analytic grading rubric using Tinderbox. I don’t generally use rubrics, but they are very popular with some of my colleagues, and I thought I’d see if I could come up with one that could actually work for me and my students.

The rubrics I’d tried in the past were completely non-starters. For me, evaluation should involve plainly written comments about what works, what doesn’t and why. I also want to suggest how things could be improved. Paper rubrics are invariably too constrained and inflexible to support this kind of feedback.

Software tools seem as if they should provide the consistency of a rubric and the flexibility of individual comments. Yet, the systems I’ve tried—and I’ve tried both ad hoc and commercial options—have all been as unwieldy as the worst of the paper rubrics. Getting my comments out of the systems so I can hand them back to students is also too often a chore.

Whether I’ve come up with something better using Tinderbox is an open question, but I do have a working rubric and have learned a lot putting it together. So I’ve decided to explain how it works.

An Overview of the Rubric

To get started I think it would be useful to show the rubric in use, and so I’ve put together a demonstration file that is a stripped down version of my course planning project. It contains the rubric, a student note (my name, fake ID number) and nothing else. In the video below, I use this demonstration file to walk through the process of creating an evaluation sheet for the student’s essay, selecting the appropriate descriptions of their work for the various criteria and then reviewing the comment sheet that results.

I’m fairly certain that all of this will look fairly boring. This is a good thing in practice—a rubric that is fireworks will be a distraction and a lot of the utility of what I’ve made comes from its flexibility which I don’t really show—but alas, demure adaptability makes for bad video. The excitement will come (maybe?) in subsequent posts when I explain how I use rules, agents, and export templates to make everything work. For now though, you’ll just see the following:

  1. A note is created and then automatically converted to a rubric container and renamed.
  2. The rubric container is expanded to reveal the evaluation criteria containers. For each criteria, one child is selected as a comment by ticking it’s checkbox. In one case, the criteria grade is revised manually and the criteria titles are updated as a result.
  3. The main rubric’s key attributes now show the final grade for the assignment. The hover expression will also show the final grade.
  4. A general comment is added for inclusion on the comment sheet.
  5. The preview pane shows the comment sheet that will be exported. Both the general and criteria-based comments are organized using additional, organizational text. Everything has been properly formatted.
  6. The selection for the first criteria is changed and revised. The changes are reflected immediately in the comment sheet.

(There is no sound with the video. The silence feels weird and peaceful I think.)

What I Wanted

My rubric isn’t fancy, but it uses techniques that are basic enough for me to understand and are exposed enough for me to adapt on the fly. I’m sure there are more elegant ways to do some of what I’ve done. That said, what I built does what I hoped it would in the four areas that mattered the most to me.

First, I wanted to select comments not number grades. I did, however, want the rubric to translate my selections into numerical point values. I also wanted it to compile these values into a grade breakdown and to use them to calculate the overall grade for the assignment. I wanted both of these things to happen automatically based only upon the text I selected.

Second, I intended the comments I selected while grading to be given back to students as part of their feedback, and so, I wanted my rubric to be flexible enough to allow me to revise or add to the prepared text in order to respond specifically to individual students’ work. I also wanted to be able to deviate from the basic grade breakdowns when necessary.

Third, once the grading was done, I wanted my rubric to export document files containing comment sheets that I could return to students either electronically or in hard copy. I wanted these files 1) to compile the comments I’d selected and written and 2) to organize and format them in a useful way. I also wanted the resulting files to be named so as to allow bulk upload to my college’s course management system.

Finally, I wanted the rubric to be able to travel from semester to semester. In other words, I needed to be able to revise the criteria, descriptors and grade calculation quickly and easily in order to adapt the rubric to new assignments and new classes. If I had to dive under-the-hood regularly, I wouldn’t do it and the whole project would be a waste. I know myself.

The Plan for Posts

Over the next week or so, I’m going to post a short series that explains how my rubric works. I think I can do everything in four posts, so my planned progression is:

If I need to break one of these posts apart to have more room, I’ll update this list to account for the change. That way it can serve as a table of contents.

Finally, before moving on, I want to acknowledge that Mark Anderson’s TbRef and his responses to questions on the Tinderbox user forum made the difference between success and failure. Mark Bernstein’s “Actions and Dashboards,” which can be found in the Tinderbox Help menu, was my go-to resource for generating ideas and solving problems. I also relied heavily on other people’s questions and posts at the Tinderbox user forums and the backstage group. So thanks to all.

Next post: setting up the prototypes.

 January 20, 2016  Hypertext Tagged with: ,
Jan 032016
 

Tinderbox agents have queries. They also have actions. The first culls notes from a project, gathering up those that you want. The second makes changes both small and large to those same gathered notes. This combo makes agents a powerful tool.

I just did something stupid though.

I’ve built up a large TBX file that has entries for each of the books in my library as well as my book logs, various reading notes, subject bibliographies and it’s all cross-linked with teaching files that I keep in DevonThink. There’s a lot going on there.

Well, just back from vacation and apparently still suffering from a serious case of lazy-brain, I opened up the file and started fiddling with an agent that pulls together a extensive cross-section of notes and does a couple basic maintenance actions on them. While doing this, I wanted to look at a set of notes with a shared prototype for a minute and decided just to update the query on this agent rather than making a new one. Because I was there and lazy and, well, it made sense at the time.

The problem is I didn’t didn’t pay attention and updated the agent’s action not the query. That simple mistake turned a benign housekeeping agent into a radical revisionist. By pressing the tab-key to register what I thought was a new query, I set this agent loose to quickly and quietly gather up its huge, cross-section of notes and to change every single one of their prototypes. Worse, I watched it happen and thought: why are all my note’s badges changing like this? When what I’d done finally registered, my heart sank. Having an agent take lots of different things and make them all the same is easy. Having an agent distinguish between notes that are suddenly all the same and to make them different again is–if it is even possible–far beyond my capacities.

Fortunately, I only messed up prototypes. I have a lot of them in this project but not dozens and they aren’t complex. So after fifteen or twenty minutes of donkey work, all my notes’ prototypes are, I think, back to normal. Mostly. (Maybe.) In other words, things could have been much much worse.

Still this deserves a note to self: pay attention when fiddling with existing agents because they are powerful and things can go very very wrong.

 January 3, 2016  Hypertext Tagged with: