This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

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

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

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

In this project, waves of vibrations are experimented with using water in glasses.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

This project compares the strength of one, two, and three-ply toilet paper.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.