In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

This clay "painting" activity encourages and supports creative development and critical thinking skills.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

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

Plants and light seem to be good buddies, but how far does the friendship really go?

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

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

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

Make a bear cave for your child to play and explore, learning about bears and winter hibernation.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Learn all about balance and motion as your child designs a corn maze!

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Help your child celebrate the summer and the sun by making a sandy seascape.