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

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Make sourdough bread...and learn some colonial history and modern science in the process!

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

This science fair project idea experiments with spinning color wheels and optical illusions.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

For a fun family activity to introduce your child to genetics, have your child go on a search for dominant and recessive family genes!

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

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

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

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.

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.