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

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Make a wish upon a tree with this craft that also helps your child learn more about Chinese culture.

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

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

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

Engineers in training can get started with this simple wheel-and-axle construction activity.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

The objective of this science fair project is to investigate salt water density.

This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Help your kindergarten science maven explore the water cycle without getting everything wet.

Teach your child how butter is created by shaking up cream the old-fashioned way.

The project investigates how water and movement affects erosion.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

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.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Science fair project that examines condensation and the conditions needed in order for dew to form.