Overall, the activity is very organized, logical and easy to follow with two distinct sections that can be accessed from the home page. The colors are complimentary and the overall theme is not distracting. Images are effectively used to provide examples of each term on each slide, but captions for these images might be helpful for some students. Images are also used as part of an assessment, which is a useful differentiation technique. Not only are text and visuals used, but video is also embedded to further engage the user. Perhaps audio recording, which narrates some of the text would be useful as an additional UDL design principle. The assessments also demonstrate good pedagogy. For example, before students take the quiz, they have the option to go back and review that section of information. The StAIR provides feedback for wrong answers in each quiz, but sometimes the feedback either repeats the question or does not guide the student toward the correct answer. The final assessment is something tangible that can be collected by the teacher to gather data.
The activity is made with PowerPoint and includes text, visuals, and video media. Using a Mac with 10.5.8, I had no trouble viewing and accessing all parts of the StAIR.