Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

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

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

Invite your middle schooler to bungee jump ... with eggs! This experiment will demonstrate Newton's laws of physics in an entertaining way.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

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

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

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

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

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Set your teen on the beat in a real world "crime scene" investigation. Can he tell whose fingerprints are on a drinking glass?

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

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

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.