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Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

This science fair project idea determines the most effective method of preserving food.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Help your kindergarten scientist discover relative size, density, and buoyancy with this fun, pumpkin science project!

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

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

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

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

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.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Is that seed alive or not? Here's an exciting way for kindergarteners to make a seed museum that your child can watch, using simple household materials.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

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

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

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

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

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

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Take a dive into the candy jar with this yummy science experiment.