In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

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

This science fair project idea experiments with spinning color wheels and optical illusions.

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

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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

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

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

This science fair project idea explores the different properties of matter.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

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

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

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