In this design challenge, your child will make a bottle rocket using typical household items.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

This science fair project idea produces sounds by creating vibrations using different objects.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

This science experiment tests if dog saliva can really help heal wounds.

In this design challenge, your child will create a parachute for a small toy using typical household items.

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

This basketball project explores the best way to make the perfect shot every time.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

This science fair project examines how seeds hitchhike on animals and clothing.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

Create a bee garden to help shelter bees in your area.

This science fair project investigates why the number of visible stars changes from place to place.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

This science fair project idea examines which type of insulation holds in the most heat.