Kindergarten - 3rd Grade Science Projects Activities

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

This science fair project idea determines what household items are good conductors of electricity.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

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

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.

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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 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.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Start your toy engines -- this is going to be a fast and friction-filled race!

This science fair project idea investigates how magnetism can defy the force of gravity.

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?

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

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

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.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

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

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This science fair project idea explores whether talking to a plant will help it grow.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

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

This project examines whether people's taste perception is influenced by what they see.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.