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

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 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 projects, students will grow out the bacteria that collect on air conditioner filters.

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 this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science experiment has students test whether a snail moves faster on concrete or dirt.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

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

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

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

In this science project, the center of gravity is explored.

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

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

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This project investigates the affect of storage temperature on microwave popcorn.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.