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

This science fair experiment examines the relationship between gender, age, and smiling.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Show your teen how to analyze the nutritional value of her favorite meals. She may be surprised to find out how healthy--or not--her favorite foods are!

The purpose of this science project is to determine which stimulus, gravity or water, will cause the greatest growth response in a plant.

A fun, life science sxperiment idea idea involving strategies for keeping birds away from crops using a distress call. What kind of distress call works best?

Determine how effective animal camouflage is by simulating it in an indoor and outdoor setting.

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

The garden is the perfect place to practice math and science with preschoolers. Get digging (and counting, sorting, observing at the same time!)

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Science fair project that guides you through how to test the humidity in the environment using a homemade psychrometer.

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

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

A science scavenger hunt can be a fun way to learn about science. Test your child's knowledge of scientific terms with this science scavenger hunt.

Learn about how sugar fermentation and growing yeast in this easy science project! Yeast is a eukaryotic microbe that puts the fun in fungus!

What do you get when you combine science and fairies? Fairy scientists who make their own potion, of course! This activity promotes critical thinking skills as your child mixes, experiments, and creates their very own fairy potions.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

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

This science fair project determines whether most people will notice that a game of chance is very slightly rigged.