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.

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

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

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

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

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

In this experiment two environments will be compared: a room with interior design that uses correct Feng Shui versus one with incorrect Feng Shui.

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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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.

Learn about how we localize objects and beings in space through sound and about monaural auditory mechanisms and binaural auditory mechanisms.

This experiment uses personality assessments to evaluate the prevalence of specific character traits in left-handed and right-handed people

Demonstrate and describe acid-base reactions of baking soda and baking powder by making pancakes.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

Discover whether cold or hot water from the faucet will boil faster on the stove.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

This project examines which style of central-air system filter traps the most particles from the air.

The objective of this experiment is to evaluate which types of people are most impacted by the McCollough effect.

This science fair project idea investigates whether plants can survive being frozen.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This science fair project idea explores how length affects the weight a bridge can hold.

Evaluate if people are more influenced by video or audio advertising.

Help your middle schooler improve his observation skills by playing this simple observation and spatial memorization game.

This project examines whether and what associations exist between numbers and letters and colors.

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.

Science fair project that examines the biodiversity of ant populations in various locations.

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.