Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

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.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Cleaning can be a chore, but not with this sudsy experiment!

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

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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?

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 science fair project, students use the streak test to tell minerals apart from each other.

Plants and light seem to be good buddies, but how far does the friendship really go?

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

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.

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

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.