Learn about this simple machine and make a pulley of your own to use for fun science trials.

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 demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

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

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

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

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

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

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.

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.