Discover whether a metal will expand under hot water.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Take a dive into the candy jar with this yummy science experiment.

This science fair project idea experiments with spinning color wheels and optical illusions.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

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

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Science fair project that examines condensation and the conditions needed in order for dew to form.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.