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!

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

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.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

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 project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

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

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

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

Check out this cool science fair project on identifying rocks and minerals for kids.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

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.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

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.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

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.