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

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

In this science fair project, students make their own rain gauge to measure rainfall.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

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

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

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

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Create a bee garden to help shelter bees in your area.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Take advantage of the spring and summer sun in this arts and crafts activity that has your learner creating pretty flower prints.

Help your young scientist celebrate the wonders of the night sky in the comfort of your own home.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

This science fair project idea investigates whether plants can survive being frozen.

This science fair project idea explores substances that cause a bubble to last longer.

In this project students experiment with making music using only glasses of water.

Make sourdough bread...and learn some colonial history and modern science in the process!

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.