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

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.

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

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.

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

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

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

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

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

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

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

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!

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

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

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

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

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?

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.