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.

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!

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.

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

Instead of painting a picture of a whale, let your preschooler make their own whale toy using a paper bag and some recycled art supplies.

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

Celebrate Earth Day, or any day, by recycling an old CD and make a colorful, decorative fish!

In this activity, learners will discover how to make a basic water filtration system using common materials found around the house or outside.

Have fun making recycled paper using scraps of used paper in your home with this hands-on project.

Help your child keep track of his pledges to be more environmentally friendly with a calendar made entirely out of recycled and reused materials!

This Earth Day, create an adorable litter bug while learning about the importance of recycling.

In celebration of Earth Day, help your fifth grader write a poem from the Earth to its inhabitants.

Kids can put old magazines and unwanted clothing to good use by creating an Earth Day-themed multimedia collage in this eco-friendly arts and crafts activity.

Make your own recycling game that helps teach your child what can and should be recycled.

Teach children how to upcycle dried-out markers with this homemade paint-making activity!

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.

Celebrate Earth Day with a decorative tree made out of strictly reused and recycled materials.

What better way to raise awareness about the environment than with an eco-friendly Earth-themed party? Get your party started with this step-by-step guide.

Get kids to celebrate Earth Day by designing their very own junk truck.

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.

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!

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

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

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

Looking for a fun way to display photos? Give recycled objects a second life by turning them into a creative photo holder.

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

This activity is a great way to engage learners in Earth Day celebrations while cultivating skills around nonfiction comprehension and research writing.

Learn about nature by making your own mini moss garden.

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