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

The goal of this project is to create an exciting topographical map out of dough.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

This science fair project idea investigates how the shape of an object affects drag.

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

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

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

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

This science fair project idea explores how length affects the weight a bridge can hold.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

This science fair project will help students learn about non-vascular plants, such as mosses.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Nature is the greatest teacher, and you can help facilitate the lesson! Here's how to create a supply backpack to get your kid ready for science action!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This project determines what category of person is most likely to be ticklish.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

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

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.