For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

Learn about the growing app design field by designing a new or improved app for smartphones.

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

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

Test of the effect of exercise on rote memory. Prepare a single list of 40 randomly chosen words. Have volunteers recall as many words as possible.

Science fair project that explains and demonstrates the parallax principle.

This science fair project idea explores whether certain physical and mental traits run in the family.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This science fair project idea explores how far the average human can see.

This science fair project idea explores whether dogs do look like their owners.

Thoroughly research image search engines. Consider possible improvements for visual search engines. Help design better image-matching engines.

Science fair project that determines what percentage of air is made up of oxygen by examining the chemical reaction between oxygen and rust.

Construct and experiment with a periscope using reflected light rays to gather an image.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.

High school students recreate Michael Faraday's experiment in this cool science fair project that induces current in a coil of wire.

This experiment strives to determine if tracking of conservation habits will lead to reductions in a family's electricity and water bills.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

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

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

The scientific purpose of this experiment is to investigate which material is the best packaging for fragile items during shipping.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.