Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

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.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

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

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

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.

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

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea examines whether boys and girls differ in reflexes.

This activity is a great way to teach kids that, to find examples of science in action, they donât need to look any further than their own backyard.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.