“There’s just not enough time to cover the curriculum if students don’t work together. And there definitely isn’t time to have students do a project that I can’t use for marks.”
While group work is an important part of the curriculum, it is essential that individual student grades be based on what individual students know and can do. A student’s grade cannot be based on what another student has – or has not done.
There are many ways to accomplish group work without resorting to group grades.