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.

In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

In this project students experiment with making music using only glasses of water.

This science fair project idea determines effective strategies to help students stay awake and attentive.

In this science fair project, students investigate how different colors influence appetite.

This science project allows students to study the psychology of happiness.

This science fair project teaches students about wilting and browning of salad greens.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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

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

This science fair project will help students learn about non-vascular plants, such as mosses.

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

In this science fair project, students create their own miniature salt flats at home.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

This science project has students study the idea of human beauty.

This science project teaches students to classify different shapes of leaves.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

Students identify variables that affect the duration of high school romances and analyze data to predict the success or failure of ongoing relationships.

In this science fair project, students use the streak test to tell minerals apart from each other.

This science fair project teaches students the differences between fruits and vegetables.

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

In this science fair experiment, high school students determine if all proteins denature at the same temperature.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

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

In this science fair project, students will learn how to calculate the formula for the thermal decomposition of potassium chlorate.

In this science fair project, students will use methylene blue to study the presence of aerobic bacteria in milk.