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Fourth Grade Science

Fourth grade science resources like these make even the reluctant kid scientist curious about the way things work. From making a homemade lava lamp to building a volcano to demonstrating density with an egg, we have teaching fourth grade science covered. If kids are ready to expand upon their understanding of scientific concepts, browse our offering of fifth grade science resources.

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Fourth Grade

Science

How to Inflate a Balloon Using Baking Soda and Vinegar

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.

Homemade Lava Lamp

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

Self-Inflating Balloons

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Life Science Crossword: Plant and Animal Cells

Kids learn important plant and animal cell vocabulary as they plug the words into their correct spots and complete the puzzle.

Why Do Apples Turn Brown?

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Reaction Time: The Ruler Drop Test

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

The Best Stain Remover for Clothes: Testing Laundry Stain Removal

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

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.

How to Make an Anemometer

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

A Single Movable Pulley and Mechanical Advantage

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.

Magnets and Temperature: Does the Temperature of a Magnet Affect its Strength?

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

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!

Breathe In, Breathe Out: The Respiratory System

Show your students the parts that work together to make a person breath! Have them compare the lungs of a healthy person, the lungs of a smoker, the lungs of a city resident, and the lungs of a miner.

Thermal Conductivity of Metals: Which Metal Is the Best Conductor of Heat?

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Volcano Project

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

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.

Food Chain Pyramid

Get familiar with this food chain pyramid, from carnivores and herbivores to producers and decomposers; each group has a role.

Best Fertilizer: The Effects of Fertilizer on Plant Growth

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

All About the Rock Cycle

If you think volcanoes are cool, this worksheet will blow your mind! Learn about the rock cycle by reading the paragraph and taking a multiple choice quiz.

Energy From Garbage: How to Make Biogas

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Fastest Way to Cool a Soda

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

In this science fair project, students make their own rain gauge to measure rainfall.

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