I do this activity on Halloween every year. It's a fun way to still do math on Halloween. Each student gets a mini package of chocolate M&Ms. Students work on estimating and creating bar graphs in this math activity. I have the students sitting in groups of 4-5. Instead of doing regular math rotations, all students are working on the same activity during the math block. M&M bags are needed for this activity :) I let students eat the M&M when their work is completed.