Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

This project explores whether music affects the growth and health of plants.

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

This science project examines the thermal properties of several major greenhouse gases.

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

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

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.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This potato cannon activity teaches your middle schooler about the principle of Boyle's Law. Make a potato cannon and have a blast learning about science.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Kids learn about Brownian motion, diffusion, and how temperature is a key factor affecting the rate of diffusion in this cool science project.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

In this experiment, your middle schooler will chart the effects of oil on a feather in order to grasp the tragic effects of oil spills on wildlife.

This bread mold experiment will help your child learn about mold, and he'll develop important hypothesis-making and experiment-designing skills.

This science fair project idea explores the different properties of matter.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?

Looking for a fun project on energy? Check out this fun elementary school science fair project idea that demonstrates chemical energy in a bottle.