Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Learn about the factors that influence group conformity.

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

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.

This science fair project idea researches the effects of acid rain on plant growth.

Determine how effective animal camouflage is by simulating it in an indoor and outdoor setting.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

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

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Science fair project that determines how your mirror image differs from your actual image and how virtual images are constructed.

Explore the role of starches as thickening agents in food, and learn about the chemical properties of starch in the process.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

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.

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.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

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

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!