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Fourth Grade Science Activities and Experiments

Our 4th grade science activities and experiments include enlightening physics demonstrations, cool electricity projects, fun food experiments, and more. For more in depth science projects, take a look at the Science Fair Project Ideas section of the site.

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Fourth Grade

Science

Density Demonstration

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

Crystal Lollipops

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

Ancient Building Techniques

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.

Make Your Own Butter!

Teach your child how butter is created by shaking up cream the old-fashioned way.

Exploding Marshmallows!

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

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!

Make a Mind-Bending Illusion!

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Air Science Experiment

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Float My Clay Boat

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Explore Surface Tension

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Make a Hovercraft!

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

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Homemade Lava Lamp

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

A Glow in the Dark Bonanza!

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

Tracking Temperatures

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Candy Science Experiments: Toffee!

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

Celebrate autumn with a seasonal bash. Welcome the fall with a festive party for your little one and her friends, full of crafts, snacks and fun games.

Make Dried Apple Rings

Your child can explore the wonders of science, and the concept of dehydration, along with creating a healthy and tasty treat!

Simple Machines at Home

Give your budding young observers a chance to discover simple machines at use in their own home.

Homemade Perfume

Let your fabulous crafter use her favorite flowers, fruits and herbs to whip up a delicious perfume that she can proudly present to a friend or loved one.

The Gas Guzzler Challenge

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

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

Halloween Decorations: Make Ghouly Hands!

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

How to Make a Water Wheel

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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