This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

In this science fair project, students create their own miniature salt flats at home.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Make a backbone model to explore human anatomy and life science.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

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

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot move in a pattern related to the sound and rhythm of music.

In this science fair project, students make their own rain gauge to measure rainfall.

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 science fair project idea's objective is to become familiar with items your family regularly throws in the trash.

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

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

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

Could there be toxic chemicals lurking in the cupboards and closets of your home?

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This science fair project idea creates cool new colorful fabric pattern designs and experiments with the mixing of colors.

This biodiversity project examines the biodiversity in your own backyard.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

The project determines determine if a sports drink affects the heart rate of a student athlete during exercise.

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.