In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

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

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

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

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

This science fair project idea compares biodiversity between drops of water.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Make a wish upon a tree with this craft that also helps your child learn more about Chinese culture.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

This science fair project idea examines the reason boats are shaped and engineered.

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

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

This science fair project idea determines what household items are good conductors of electricity.

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

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.