This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Whatever is stacked in your cupboard can be used to help your child learn how to compare fractions and decimals. A great hands-on math lesson!

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

How much does 100 weigh? Play this fun guessing game with your child to commemorate the 100th day of school.

Use playing cards to learn about temperature as well as positive and negative integers in this fourth grade math game.

This fun activity encourages your child to develop their skills in not only taking measurements, but also in working with the measurements themselves.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?