In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Discover whether a metal will expand under hot water.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Discover which fabrics shrink the most in the wash and why.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.