Will the shape of an ice cube impact how fast the ice melts?

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

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.

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 idea experiments with spinning color wheels and optical illusions.

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

In this design challenge, students will be tasked with creating a bouncy ball polymer!

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

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

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

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!

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

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

Challenge your learner to design and build a city of their own in this creative engineering activity.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Discover how and which salt melts ice the quickest.

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

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

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

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

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 windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

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.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.