Here's a fun and easy way to take attendance on Pi Day. Have students drag their pie to the Pi Monster.

To change the pie to your students' names, right click on the pie, click on group and then click on ungroup. You will then be able to type the name of student. When you are done, click on the student's name and pie (hold down the control button as you do this), then right click, click on grouping, and then group.