Students learn about even and odd numbers by sorting "Truffle Seeds" (I use Trix cereal) into two groups. If each group ends up with the same amount of seeds, the original quantity was an even number. We talk about how even numbers are "fair." If the groups end up with a different number, the original quantity was odd (not fair).
Students can work by themselves or with a partner. After practicing with three different numbers, students think of their own quantity, sort the seeds and then determine whether the number is even or odd.
This is a great exploration activity for students to learn about even and odd numbers. It can also be tied into a unit on Dr. Seuss or The Lorax.