This is a simple twist on a common trigonometry assignment. Instead of having students fill out a unit circle on paper turn it into an event and have students draw the unit circle from memory on the board in front of their peers.
This adds an extra element to the knowledge and confidence level needed to complete the task.
Simply print the scoring sheet I included and record any errors when the student finishes and you can then punch the scores back into the spreadsheet. The grade will automatically calculate.