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4th Grade: Physical Science

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Liquid Chromatography

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Density Demonstration

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Make a Pinhole Projector!

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

Slinky Physics

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Make Your Own Soap

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.

Make a Hovercraft!

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Crystal Lollipops

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

Blast Off! Rocket Science

Is your child a rocket scientist in the making? Here's a fun activity that illustrates the basic principles behind what makes rockets rock!

Volcano Project

Your child will be hooked on chemistry after she builds a model volcano by combining an acid and an alkaline substance.

Electric Science: Make a Battery!

Try this chemistry experiment with your curious kid and get some "shocking" results!

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