This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

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!

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

Take a nature walk in your backyard or local park to find one object for every letter of the alphabet. Then put them together in this handy nature book.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

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

Blend art and science in this hands-on activity that shows your kindergartener how primary colors combine to make secondary colors.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

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

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

The fish most kids see is usually filleted, and it's hard to see how it came from a lake or sea. This cool gyotaku activity blends life science with art!

In this project, a basketball containing different psi is dropped to see how well it bounces.

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

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

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

Combine science with reading and art to help your first grader create an attractive holiday gift for a beloved friend or relative.

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

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

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.