How do organic materials become soil? This science experiment measures what materials biodegrade.

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

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

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.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

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 activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

Explore if planting seeds in a certain direction will affect how fast it germinates.

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

In this project, the affect of acid rain is simulated by the acid, vinegar.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.