Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

In this middle school activity, your child will learn how to press plants and create her very own herbarium, or plant library! Here's how:

This experiment explores how listening in to a one-sided conversation affects concentration.

This experiment observes inattentional blindness and investigates whether certain age groups or genders are more likely to demonstrate this phenomenon.

Show your middle schooler how a quick whirl of spinach in the blender will reveal the cobwebby "stuff"--or DNA--of life!

Help your child plant a "tea garden": a garden made of herbs for making teas.

Show your teen how to make her own beeswax lip balm. It's one of the simplest do-it-yourself activities, and it's fun to make!

Help your fifth grader embrace the roots--literally--of Mother's Day by growing carnations to honor mothers in you family's history.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

This science fair project examines how seeds hitchhike on animals and clothing.

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.

Research history of programming language. Design a new or improved programming language. Create a display that illustrates the features and improvements.

Create a colorful, informative display that illustrates the properties of blood cells. Prepare slides using samples of fresh raw beef or chicken bone marrow.

In this science fair experiment, middle school students evaluate whether tone of voice can influence our ability to remember a list of everyday objects.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

Demonstrate that insects observe colors and choose favorites. Place colored pieces of construction paper on a flat, glassy surface, observe bug preference.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

In this science fair project, students investigate how different colors influence appetite.

Describe the lives of commercially raised chickens. Contact local chicken farmers for information and advice. Write a detailed report about farming techniques.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

Wild-type and GAPDH mutant Caenorhabditis elegans were used as an example of how glucose or sugar affects the lifespan of humans.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.