Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

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

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

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

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

This science project teaches students to classify different shapes of leaves.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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

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.

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

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

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

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Have your child kick off their summer vacation by making a miniature water slide!

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?

This science fair project idea examines which type of insulation holds in the most heat.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.