Place mushroom caps on poster board, label samples. Check beneath mushroom caps for "prints" of spores. Record and interpret prints left behind.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

In this project, you will observe and record changes in sunspots over two weeks.

This science fair project idea focuses on two classes of sugars monosaccharides (fructose) and disaccharides (sucrose or table sugar).

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Administer IQ tests to volunteers. have one group practice typical IQ test problems. Then compare results of the two groups.

This experiment investigates whether smell can be used to enhance test subjects' memories.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.

This science fair project determines which of two chemical agents can be used to release the drug (tea) from hydrogel crystals.

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

This science fair project investigates which of two learning modes most commonly used in school, visual and auditory, is better for information retention.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

Determine whether cats have dominant paws. Observe which paw cat uses to reach for treats, feather, and string. Calculate percentage for two paws.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

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

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

Monitor the impact learning how to play chess has an academic performance. Divide subjects into two groups compare GPA

In this science fair project, high school students will try to determine the mathematical patterns in JS Bach's two movement preludes and fugues.

Learn how to relight a candle by lighting the vaporized wax in the smoke, and test how various kind of wax and candle brands relight differently.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Students identify variables that affect the duration of high school romances and analyze data to predict the success or failure of ongoing relationships.