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Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

How to Measure Viscosity of Liquids

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

What is Topography?

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Microwave Plant Experiment: Radish Seed Germination

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Animal Vision: Ocelli, Compound Eyes, and Camera Eyes

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Measuring Raindrops

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

What Is a Compound Microscope?

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Floating Paper Clip

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

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

How to Prevent Erosion

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Principles of Air Pressure

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Angle of Heat

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Cricket Behavior

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Hero's Engine: Example of Newton's Third Law

This science fair project idea produces varying pitches of sound.

Changing the Pitch of Sound

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Ping Pong Ball Anemometer

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Ivory Soap Experiment

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Jane Goodall and Nature Journaling

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Static Electricity Project

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Heating Sugar

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Does Electricity Move Better through Thick Wires or Thin Ones?

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

How to Make a Rubber Band Car

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Star Clock

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

How to Make a Steam Powered Rocket Boat

What cause the phases of the moon? Make a  model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

What Causes the Phases of the Moon?

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

The Rings of Saturn: A Scale Model

Is it a square or a circle? See if you can trick your friends with this zany science project!

Shape Words

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Coriolis Effect and Hurricanes

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

What Causes Dilated Pupils?

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Design Challenge: Gumdrop Towers

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Cleaning With Lemon Experiment

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