This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Check out this cool science fair project on identifying rocks and minerals for kids.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This science fair project idea examines which type of insulation holds in the most heat.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

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

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

This science fair project idea identifies trees using a dichotomous key.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea produces varying pitches of sound.