Looking for fun, new resources for teaching arrays in grade? This set of 20 task cards provides photographed examples of real life uses for arrays. Great for small group math centers, whole class scoot games, or math tubs!
Grab It! This activity has students grab a number of manipulatives, in this case pom poms, and first estimate how many they thing there are and then actually count. Estimation is included as a method of computing numbers.