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

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Start your toy engines -- this is going to be a fast and friction-filled race!

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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

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

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

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

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

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

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

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

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

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

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

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.