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

Help your young scientist celebrate the wonders of the night sky in the comfort of your own home.

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

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

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

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

This science fair project idea explores whether color affects a person's emotional state.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

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

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.