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.

Create a self-portrait from natural materials in this collage craft activity!

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

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

This science fair project teaches students the differences between fruits and vegetables.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

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

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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 teaches students about wilting and browning of salad greens.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.