The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

This experiment will evaluate if chewing gum affects students' test performance.

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.

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

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

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.

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

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!

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

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

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

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

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

This science fair project idea determines if the color of light affects the growth of plants.

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.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?