In an online environment there is not a real way to prevent students from taking quizzes and finals with open books or open note. Because of all the ways that students can look up information and talk to their classmates, it may be better to embrace it. Instead of thinking of quizzes as a way to assess student memorization before attempting a quiz, think of it as an activity, to reinforce or support lessons from class or course readings. Some examples of alternative approaches to quizzes:
If you do want to keep using traditional quizzes in Moodle, there are a few tweaks one could make in the settings that could make it slightly more difficult for students to share answers:
Moodle's default setting is to let students see all the complete answers as soon as they finish their quiz attempt. Instead, one can change it so that the correct answers are not revealed until after the time to take the quiz is over. Go to Quiz Settings, under Review Options. Uncheck all the options in the first three columns, making it so results and correct answers are not revealed until after the quiz is closed.
On the "Edit Quiz" page, which lists all the questions for the quiz, in the top right corner is a box you can click, "Shuffle". This will make it so all the questions are asked, but that the order will be different for each student attempting it.
You can set up a bank of questions -- many different questions and students get a random sampling of questions, so not every student gets the exact same set of questions. This is much more work for the faculty, and perhaps less fair for students if there is varying difficulty in the questions in the bank.
Answer order can be shuffled within questions, making it harder to share answers (i.e., the correct answer will be A for Student 1 and B for Student 2).
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