Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

In this activity, your kid has your permission to get his socks nice and filthy. In fact, it's a necessity, because those socks are going to make a garden.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

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

Make edible amber fossils with your second grader to explore the fascinating world of science!

This slightly messy, but tons-of-fun tactile activity will cement the idea of the land and water as pictured on maps in your young learner's mind.

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

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

Your child can use leaves and grass to create his own outdoor art in celebration of Earth Day...all he needs are is the great outdoors and some creativity!

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

Here's a pressed leaf card project that puts science and writing together for your second grader.

Learn about nature by making your own mini moss garden.