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.

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

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

The goal of this project is to create an exciting topographical map out of dough.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

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

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

Learn all about balance and motion as your child designs a corn maze!

This science fair project idea experiments with spinning color wheels and optical illusions.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

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.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

In this activity, your child will be challenged to make a tower using paper cups.

Check out this fun high school science fair project idea to investigate how the cell membrane regulates what moves into and out of cells.

In this fun experiment, we'll find out how color affects heat absorption!

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Research history of programming language. Design a new or improved programming language. Create a display that illustrates the features and improvements.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

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

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

This project involves the programming and development of a 3D Rubik's Cube application using C++.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

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

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