Choosing Your Learning Path

We highly recommend reading online. While the materials here are available for download in various formats (ePub, HTML, and PDF), the interactive elements in the readings and activities are best viewed online in Pressbooks.

Throughout the pages here, you’ll see the various coloured boxes described below to help you organize how you engage with the content.


Throughout the content, we identify items for you to collect and add to your WAI-ARIA Developer Toolkit. These items will include links to resource documents and online tools used during development activities, as well as software or browser plugins that you may need to install.

These will be identified in a green Toolkit box like the following:

Toolkit: Provides useful tools and resources for your future reference.

Key Points

Important or notable information is highlighted and labelled in Key Point boxes such as the one that follows. These will include “must know” information, as well as less obvious considerations and interesting points.

Key Point: Essential information and interesting points.

Try This

Brief activities are highlighted in in the Try This boxes. These activities are designed to get you thinking or give you firsthand experience with something you’ve just read about.

Try This: Usually a quick activity to help you understand a topic being discussed.

Suggested Reading

Links listed in these Suggested Reading boxes act more as references than readings. At a minimum, scan through these documents to understand what they contain and refer back to them when you encounter scenarios where WAI-ARIA could or should be used.
Suggested Reading: Links to various web resources for optional reading on the topics being discussed.

Activity Elements

When the widget coding activities are introduced in Unit 4, each of the elements in the example activity are described using the Activity Element box.

Activity Element: A brief description of each section of an activity.


The first few units include Self-Tests, which will help reinforce key topics discussed in a unit. For questions that have multiple answers, be sure to select all the correct answers and no incorrect answers in order for the question to be marked “correct.” Multiple answer questions can be challenging, and they typically require a thorough understanding of the topic to answer correctly. Questions will only reference topics covered in the content itself. They will not test your knowledge of content referred to on external resource sites that may be linked from the content.

Try This: Skip ahead to the end and read through the Content Recap for a high-level summary of the topics covered here.


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Web Accessibility for Developers Copyright © 2019 by The Chang School, Toronto Metropolitan University is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, except where otherwise noted.

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