How do I Hide Quiz Grade for a Period of Time?

Is it possible to create a graded quiz but have the system not show the grade until I allow it to be shown? I teach in a TBL environment and the students can't see their quiz grade until the tea...

TBL - Team Based Learning Scoring

Is there a way to have a iRAT (individual quiz) and a tRAT (team quiz) both exactly the same questions and to create a process so that it will give both grades the highest of the 2 as long as the iRA...

Group Quiz - Multiple Tries - Scoring Decrease

I am using team based learning and wondering if there is a way to assign multiple students to a quiz and then as they answer the points decrease as they choose the wrong answer but they can continue ...