Check out this simple version of a pairs game that's played all over the world. It's a great way to practice estimating and predicting mathematical outcomes.

In this fun math activity, second graders will learn to estimate items in a jar! 

Countries all around the world have been using the abacus for thousands of years to make math easier. Have your kid make his own abacus to practice arithmetic.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.