Divisibility Rules charts and activity page. The charts include visual representations of number rods and base-ten blocks. Charts illustrate WHY the divisibility rules for 2, 3, 5, 6, 9, and 10 work. Three illustrations are included: Divisibility by 2, 5, 10; Divisibility by 3 & 9, Divisibility by 6. Activity page includes practice for divisibility rules for 2, 3, 5, 6, 9, and 10.