History and Advantages of Template-Based e-Learning Authoring

My last response on Responsive Web Design with Exam Engine and Training Studio got me to thinking about the advantages of templates in e-Learning. I first wrote on the subject in 1999 with the paper “Extended” Page Templates for Speeding Up CBT Development.  We later included it in 2001’s The ToolBook Companion. The idea behind that paper was the work we did in ToolBook to copy in “template pages” that are already configured rather than creating them by hand or haphazardly copying and pasting pages. We used this successfully in large custom training development efforts for companies like Baker-Hughes Inteq. Here is the dialog box for selecting a template:

ToolBookTemplateDialog

Here was my “advantages and disadvantages” statement:

Although there was quite a bit of up-front time to do this, we believe that it paid off nicely later in the project. The biggest advantages in the end were consistency and faster screen creation. Consistency refers to the fact that individual developers can’t introduce bugs on individual pages. They may expose bugs in the shared scripts or editors, but once these are fixed you know that all of the pages work correctly. This reduces the testing burden and allows the developers to focus on the content rather than the programming. The main disadvantage of the approach was the development time and skill needed to create a new extended page template. It wasn’t too bad for a page that was going to be used a number of times, but it was too much work for a unique page. Another disadvantage was more from a business perspective. Although the “Wellbore” approach worked very well for its specific project, it didn’t “scale up” that well to a general authoring solution. The shared scripts and editors were so optimized for efficient screen creation as to be of little use for developers outside of Platte Canyon. Since our focus is on products, we saw this as a disadvantage.

We had some thoughts of making a template-based ToolBook product, but the market looked questionable.

The next time templates came up was late 2002 when I ran an training class for the U.S. Army MANSCEN Schools based on my then new VBTrain.Net book. I quickly found out that their main interest was writing an editor to connect to an Access database. They had “storyboard” contractors that were entering content that was then used by the e-Learning developers. Rather than copying and pasting it, they wanted the content to read directly from the database. The rest of the weeklong class turned into me designing the database structure, writing the editor, and then writing the ToolBook side (templates and ADO code to populate the templates from the database). They were very happy with the solution as it boosted productivity considerably. But what invariably happened was that developers would edit the ToolBook files after populating them from the database. This caused the content to get out of sync with the database. Plus, the content had to published to DHTML each time a change was made.

In the meantime, we had created our .NET Question control and Exam Engine product (2003). The Army brought me back to create an ASP.NET solution that read the storyboard databases directly and dynamically brought in the images and media. Here is a screen shot:

ManscenScreen

This was a big step up, but the need for ASP.NET was problematic. Technically that kept the resulting training from being SCORM-compliant, since the SCORM package was supposed to be self-contained and an ASP.NET solution would not work on a non-Windows server or without a virtual directory being created.

We went back to the drawing board and created a Flash-based prototype using a more general database structure (similar to what we had created for Exam Engine). This product would become Training Studio in 2007, but before we could finish it, the Army awarded us a GSA contract in 2006 to create a complete set of editors and Flash templates for their same set of databases. Last we heard, they were still using this system.

As our Exam Engine also suffered from the disadvantages of being ASP.NET-based, we created a Silverlight version in early 2009 and a Flex/Flash version in late 2010. We quickly followed that up with a Flex version of Training Studio in 2010. Both products used our own question implementation (the original Training Studio used the Flash ActionScript 2 Question objects).

These products did fairly well, but like most Flash-based authoring tools, the writing was on the wall from the fact that that iPhone and iPad would not support Flash. So we rewrote both products from scratch, releasing version 4 of Exam Engine in May 2012 and version 3 of Training Studio in July 2012. Both of these were completely HTML/JavaScript/jQuery/CSS.

So why the big history lesson? Today we released version 4.5 of Exam Engine and 3.5 of Training Studio. The big change is the introduction of Responsive Web Design. It occurred to me that this ability was one more huge advantage of template-based authoring. So here is an overall list:

Advantages of Template-Based Authoring

  1. Content is independent of your display engine. We have Exam Engine customers who created their questions and media back in version 1 and have successfully updated it with minimal effort through these technologies: ASP.NET, Silverlight, Flash, and HTML. Since images and media are outside the authoring tool, they are easily updated without re-publishing your content. This is similar in concept to what Doc-To-Help offers for help authoring.
  2. e-Learning can be interactive yet still be created by non-programmers. Subject matter experts pick templates and fill in forms for the content. A “guru” can edit or create templates as needed.
  3. Localization is much easier since all content and images/media are stored externally and only brought together at runtime. The same editors used for content creation can also be used for localization.
  4. Pages are consistent. With traditional page-based authoring, authors tend to move titles and other items around. This can be distracting to the end user.
  5. Responsive Web Design is much easier. Imagine a training course of 5 lessons of 50 pages each. In most authoring tools, adjusting the content to the size of the browser is impossible. But even if it were possible, think of having to create CSS media queries for each unique page (potentially 250 pages in our example). That is such a huge job as to not being feasible. Instead, imagine that you are using templates. Even if you used all 30 Training Studio templates or 16 Exam Engine templates, creating/editing the CSS media queries is much more manageable.

For consistency, we should look at the disadvantages as well.

Disadvantages of Template-Based Authoring

  1. Not suited for lots of unique screen designs. To the extent that most screens are unique, creating templates to match can be a lot of work. Templates work best when you have consistent types of interactions such as image on the left and content on right, hotspots down the left side of the page, a video that fills the screen, etc.
  2. Different mindset. Authoring with templates can be frustrating to those authors who like to get it and “fiddle” with each page. As someone who has managed teams of e-Learning developers, I actually like keeping the authors out of the source as creative people tend to want to spend hours on a questionable animation rather than cranking out another five pages of training.
  3. Some technical expertise required. While template-based authoring is good for non-programmers, someone in the organization needs to have some HTML, JavaScript, and/or CSS experience in order to update and edit templates. Without this capability, a traditional authoring tool might be a better fit.

Thanks for sticking around for the history lesson!

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SCORM and Closing the Browser Window: Silverlight

As discussed in the previous post on ActionScript, we needed to change our logic somewhat to support showing our Exam Engine and Training Studio content in a Tracker.Net 5 (or other LMS) frame. Since Exam Engine has both a Flash/Flex implementation and a Silverlight implementation (note: version 4 is now HTML/JavaScript), I thought I would show the Silverlight implementation in this article. The logic is the same as with the previous article. We want to initiate the SCORM messages when the user clicks the Exit button and then be sure not to resend them when the window closes. In the popup window situation, however, the SCORM messages need to be sent when the user closes the browser window without clicking the Exit button.

The Exit button code is shown below.

Private Sub ExitBtn_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
    Dim examRefId As ExamEngineSettings = ExamReferenceId
    Dim exitMessage As String = examRefId.ReadExamSetting("ExitMessage", "")
    Dim okToExit As Boolean = True

    If exitMessage <> "" Then
        okToExit = Browser.HtmlPage.Window.Confirm(exitMessage)
    End If
    If okToExit = True Then
        ' Changed the following since this did not work if the content is in an iFrame.
        ' Instead, call ExitExam directly and set a variable to skip the exit on the
        ' subsequent closing of the browser window
        Dim exitSuccess As Boolean = examRefId.ExitExam()

        If exitSuccess = True Then
            examRefId.AlreadyExited = True
            Browser.HtmlPage.Window.Eval("window.close()")
        End If
    End If
End Sub

We again read our exit message and display that to the user via JavaScript. Notice how we can call the JavaScript confirm method directly from the Visual Basic code. If the user confirms exiting, we call the ExitExam method. This is where all the SCORM messages are sent. If that returns True, we set the AlreadyExited global variable to True and try to close the window.

As with the Flash/Flex implementation we registered the “onunload” browser event. In this case, we call ExitExamHandler as shown below. Notice that we check the same AlreadyExited variable before calling ExitExam. This avoids it being called twice if the user clicked the Exit button to close the window.

Private Sub Application_Startup(ByVal o As Object, ByVal e As StartupEventArgs) Handles Me.Startup
    Me.RootVisual = New Page()
    HtmlPage.Window.AttachEvent("onunload", AddressOf ExitExamHandler)
End Sub

Public Sub ExitExamHandler(ByVal sender As Object, ByVal e As EventArgs)
    Dim examRefId As ExamEngineSettings = ExamReferenceId

    If examRefId.AlreadyExited = False Then
        ExamReferenceId.ExitExam()
        examRefId.AlreadyExited = True
    End If
End Sub