What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Find out whether putting something on top of a plant will inhibit its growth.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Transform your uncomfortable wooden shoes into charming mini planters!

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot move in a pattern related to the sound and rhythm of music.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Make "fossils" with your child to hide in the sandbox or at the park or the beach, to help your child explore his archaeological side.

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

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

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

This activity will introduce your child to the four different components of blood and give him a fun way to visualize its properties.

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

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

Discover whether a metal will expand under hot water.

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

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

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.

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.

This easy at-home experiment is a great way to "see" science.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

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.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!