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In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

This science fair project idea produces varying pitches of sound.

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

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

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

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

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

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

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

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

Do you think heat can affect a plant's growth rate?

Learn how different types of soil affect how animal tracks form in this experiment!