4th Grade 4.OA.4
Making Prime & Composite numbers fun! For this activity, you will place number cards from 1-100 (I wrote them on index cards) in a bin for each group. Students will pull a number, list the factors, at least 3 multiples, and decide whether it is prime or composite.
If their number is composite, they can get a Jelly Belly jelly bean. If it's prime, they are Bean Boozled!
This teaches the students that prime numbers are more tricky to deal with; not to mention they have so much fun!
You can purchase Bean Boozled jelly beans at most stores. I've found them at Five Below and Target.