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Showing Results for three digit  using place value

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

The Relationship Between Toilet Paper Ply and Strength

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

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Different Types of Rocks

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

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

Musical Glasses

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

Indoor Gardening with Kitchen Waste

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

Play Forensic Flashlight Tricks

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

Design Challenge: Making a Parachute

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!

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

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

Cell Membrane

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

Your child will create her own falling snowflakes using white paper and glue them over a tree, so it appears as if they are falling from the sky.

Snowflake Patterns

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

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

Design Challenge: Making a Bottle Rocket

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

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Floating Balloons

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

How does frost form?  How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

How Does Frost Form?

Using an empty tennis ball can and a swimming pool, you will determine if it&#39;s possible to have a conversation under water.

Speaking Under Water

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

Gymnosperms: Pine Cone Experiment

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

How to Separate Salt from Water

In this design thinking activity, your child will choose an animal to research,&nbsp;learn&nbsp;about the animal&rsquo;s habitat, and then replicate the animal&#39;s habitat using household items.

Design Challenge: Creating Animal Habitats

Young scientists will investigate people&#39;s preferences for saltiness, and make some inferences about genetics and diet.

Too Much Sodium?

This science fair project idea examines which type of insulation holds in the most heat.

Best Insulators

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Does Ultraviolet (UV) Light Pass through Some Colors More than Others?

This project investigates the affect of storage temperature on microwave popcorn.

Where Should You Store Your Popcorn?

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Which Cup Best Prevents Ice from Melting?

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

Bake Chocolate Volcano Cupcakes!

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Do Plants Need Water?  

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