Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

You and your child can create this beautiful butterfly mobile for hanging anywhere in the home (and learn about this magical creature while you're at it).

Conduct a simple experiment with your child to study how dirt tracks change as they age in this 1st grade science activity.

Do you think heat can affect a plant's growth rate?

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

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

This is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

Allow your first grader to get his artwork outdoors this summer by letting him create a garden art box for his arts and crafts supplies.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Make a backbone model to explore human anatomy and life science.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Create homemade seed packets with your kids. This activity combines your kids' love of science and the outdoors with a little writing and drawing fun.