Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Make a mood meter with your child to help them recognize and share their feelings.

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

Make a "feeling meter" that helps your first grader read key feeling words and communicate his emotions accurately to you.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

This science fair project evaluates which sense produces the fastest response time: hearing, touching, smelling or seeing.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

In this science fair project on the relationship between distance and time, kids explore the behavior of gravitational acceleration through direct observation.

This Fourth of July, play a fun history-inspired math and logic puzzle game for your kids to play!

Check out this fun science fair project idea to explore fun facts about fruit juices and learn why do juices turn bad in the fridge.

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

This experiment will evaluate how texting and talking on cell phones influence reaction time.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Love is in the air, and there's no time like Valentine's Day for your high schooler to learn about the most romantic poetic form: the sonnet!

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Get your child excited about measuring with this fun and easy household measurements activity.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.