I spent about a half hour clicking on several of the test areas, including ones on formal logic and infomal fallacies. The test questions range from true/false to "short answer"; for the latter the student is asked to think of the answer before clicking to see the correct answer. True/false questions give the correct answer when either true or false is clicked. For multiple choice questions students are not told what the correct answer is until it is clicked. The questions and answers are quite straightforward and reinforce basic logical concepts, such as validity, induction, deduction, and the like. The reason I selected three stars is for a reason recognized by the author, who states on a page giving the limitations of the tutorial that many of the subjects covered in the multitude of tests (dozens and dozens) may not be covered in the student's text but, more importantly, subjects that are covered may not have the same name as that given in the tutorial. In order for a given instructor to adapt the materials a large effort would be requried to rewrite the questions. Some of the questions would fit any logic or critical thinking text, but others, with different names, might well be confusing for students. The content is certainly the core curriculum within an introduction to logic or critical thinking course and the tutorial may be helpful as a teaching tool, emphasizing repetition as the author notes. The tutorial would work best, it seems to me, after the basic concepts have been learned and the instructor is looking for ways to reinforce learned concepts. Answer pages provide positive and immediate feedback to students.
The various pages are text only, without illustrations, so they load rapidly even with a slow modem connection. The page for questions and answers might be made more elegant but the questions and answers are easy to read on the screen. Each page provides a link back to the test selection area so the student would not get "trapped" by the software. There is no tracking of answers.