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

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.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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

This science fair project idea explores whether talking to a plant will help it grow.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

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

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

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

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!

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

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

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

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

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

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