Divide you class into five groups. Assign each group a rule of divisibility for 2, 3, 5, 9, or 10. Have them greate a poster illustrating the rule and write a poem or a skit explaining it. Then have them present their work to another class.
The grade level links above will take you to the Sunshine State Standards math expectations. Each expectation also includes a printable student activity.
FloridaMath.com aims to provide valuable math teaching resources for instructors and parents alike. Founded by a practicing third grade math teacher, it was constructed as a place for people to come together and share math teaching ideas. Since practicing instructors contribute to this website, the math teaching resources you will find here are both relevant and applicable.