In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Think about the adaptive utility of an important aspect of our physiology.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

Find out whether a longer airplane will fly farther or a wider paper airplane.

This slightly messy, but tons-of-fun tactile activity will cement the idea of the land and water as pictured on maps in your young learner's mind.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Science fair project that examines condensation and the conditions needed in order for dew to form.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

This experiment will explore whether adding different substances to a gel affects its strength.

The purpose of this science fair project is to investigate whether we can simulate how craters are formed and predict their size and shape.

In this experiment, you experiment with laser jet toner, a magnetic fluid, as it moves, bubbles, and forms unique shapes.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.