My students and I have noticed a few issues with the Unit 2 Self-Check questions page: Unit 2 Self-Check Questions
- After selecting the correct answer, many of the questions display as red, instead of green
- Correct answers aren't displayed for "Which of the following expressions will report true?"
Two screenshots illustrate the issues, and one screenshot shows the expected behavior (i.e., "Correct!" and green when the correct answer is selected).