This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Use pepper and soap to discover some fun facts about the properties of water.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

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

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

In this activity your child will create their very own marble maze!

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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?

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

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Discover whether cold or hot water from the faucet will boil faster on the stove.

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

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

This science fair project teaches students about wilting and browning of salad greens.