How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Want to boost math and science learning? Take a bug expedition and give your first grader practice observing and charting what they see.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

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

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

This science fair project idea investigates how the shape of an object affects drag.

Test your friends to find out if you can replicate the placebo effect's incredible results.

This science fair project idea explores how length affects the weight a bridge can hold.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Using a toy race car kids create a visual model of the Doppler Effect.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?