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This science fair project investigates why the number of visible stars changes from place to place.

Stars In The Sky

This science fair project idea identifies trees using a dichotomous key.

Using A Dichotomous Key To Identify Trees

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

DIY Compost: Aerobic and Anaerobic Decomposition

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Using Mirrors in the Garden: Measuring Light Reflection

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets&#39; relative size!

Scale Model of the Solar System

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Making A Rock In A Cup

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.

Using a Compass

This project compares the strength of one, two, and three-ply toilet paper.

The Relationship Between Toilet Paper Ply and Strength

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

Popcorn Pumice: Exploring Different Rock Densities

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

How to Inflate a Balloon Using Baking Soda and Vinegar 

This science fair project idea produces sounds by creating vibrations using different objects.

Creating Sound Through Vibrations

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Indoor Gardening with Kitchen Waste

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

Do-It-Yourself Solar Eclipse!

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

Growing Bacteria

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

DIY Electromagnet

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

Orange Bird Feeder

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

Musical Glasses

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

Play Forensic Flashlight Tricks

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

Magic Glass of Water

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

What is Induction?

In this science fair project you will make a model of a cell membrane using very simple material.

Cell Membrane

Construct and experiment with a periscope using reflected light rays to gather an image.

Periscope Construction

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Make a Paper Helicopter

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

Walnut Shell Dye 

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Soda Explosion

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

How to Make a Compass

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Light Intensity and Distance

In this design challenge, your child will create a parachute for a small toy using typical household items.

Design Challenge: Making a Parachute

In this design challenge, your child will make a bottle rocket using typical household items.

Design Challenge: Making a Bottle Rocket

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Halloween STEM Building Challenge

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