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This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

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

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

This science fair project idea examines the reason boats are shaped and engineered.

This science fair project idea identifies trees using a dichotomous key.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

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.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

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.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

This science fair project idea determines the probability of a coin landing heads or tails.