Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

This science fair project idea explores whether white light can be separated into different colors.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Cleaning can be a chore, but not with this sudsy experiment!

Create a self-portrait from natural materials in this collage craft activity!

This fun experiment provides a concrete and visually striking illustration of photosynthesis.