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

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

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

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.

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

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

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

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

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.

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

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.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Construct batteries that make electricity from fruits with this fun science fair project.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

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

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.