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This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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

This science fair project idea determines what household items are good conductors of electricity.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science fair project idea determines what household items are good conductors of electricity.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

The goal of this project is to create an exciting topographical map out of dough.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Make a backbone model to explore human anatomy and life science.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.