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Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

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.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

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.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

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

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

This science project teaches students to classify different shapes of leaves.

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?

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

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

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

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.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

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

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.