This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

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

This science fair project idea investigates whether plants can survive being frozen.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

This science fair project idea explores substances that cause a bubble to last longer.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

In this project students experiment with making music using only glasses of water.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

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.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

How well can people recall what they have observed. Test your knowledge in this fun experiment.

In this experiment we will be determining whether birds prefer certain colors of seed.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Give your budding young observers a chance to discover simple machines at use in their own home.

Learn whether writing things down really makes things easier to remember.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

This science fair project idea determines if the color of light affects the growth of plants.

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.