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In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

This science fair project idea explores if an LED light can be powered by vegetables and/or fruits.

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

This project explores how well couples convey complex emotions such as envy and pride to one another solely through the sense of touch.

Science fair project that determines how your mirror image differs from your actual image and how virtual images are constructed.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Students will investigate the illumination durations and intensities of different luminous substances of different colors of the spectrum.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

This project concerns activity happening millions of miles away, on the sun.

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

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

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Observe trends in the properties of writing materials over past 5000 years and extrapolate to future time. Prepare a table that compares writing material.

Check out this cool science project idea to explore the differences in feeding behaviors of birds and if other species of birds also have color preferences.

This biodiversity project examines the biodiversity in your own backyard.

This science fair project idea compares biodiversity between drops of water.

This science fair project idea discovers the effect of (high) heat on animal cells.

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

The objective of this science fair project is to assess the benefits of the game system for improving player performance following use.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

This science fair project idea focuses on the production of oxygen by plants during the photosynthesis process.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

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.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.