Science fair project in which you will graft branches from different fruit tree onto a root stalk.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

Do you think heat can affect a plant's growth rate?

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

This project examines various algorithms to determine the ideal algorithm for a strategy game.

Recycling may be a confusing concept for your little one, so take the time to teach them the magic of compost - right in your own backyard!

Discover whether ants are more attracted to natural cane sugar or artificial sweeteners.

Here is a quick experiment you can conduct at the playground to introduce or reinforce the concept of Newton's First Law, The Law of Inertia.

This experiment will examine and precisely measure the amount of sugar in various sodas.

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This science fair project idea explores how water and ice can change the form of rocks.

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

Help your kindergarten science maven explore the water cycle without getting everything wet.

This potato cannon activity teaches your middle schooler about the principle of Boyle's Law. Make a potato cannon and have a blast learning about science.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

Create uphill flow of water by using a siphon. Create vacuum by suctioning one end of tube, and submerge it under water. Watch the direction the water travels.

This science fair project evaluates if and how eating a large meal affects ability to perform mental tasks.

Introduce your child to science with something they see everyday--their shadow!

This science fair project idea produces sounds by creating vibrations using different objects.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Learn about Ikebana, or the Japanese art of flower arranging, with your child while artfully arranging spring flowers!

Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.

The objective of this sociologically-inclined experiment is to evaluate whether kids' toy preferences are hardwired or develop as they grow.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.