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

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

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

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 that helps you create your own compost pile in order to test the efficiency of different methods of composting.

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

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Here's an arts and crafts activity for preschoolers and pre-kindergarteners: build brick buildings with homemade mud bricks made from dirt and water.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

What better way to nurture your child's imagination than by making a fairy house out of materials found in nature!

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.