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

In this science fair project, students make their own rain gauge to measure rainfall.

Help your kindergarten science maven explore the water cycle without getting everything wet.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Create a bee garden to help shelter bees in your area.

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.

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

Make a planter full of delicious seasonings and classic grilling vegetables, great for a Fatherâs Day gift or a fun start-of-summer outdoor activity.

Make a spring collage with your child to get them outside and those creative juices flowing!

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

Help your child plant a "tea garden": a garden made of herbs for making teas.

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

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

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