Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Help your child create a written message and practice their letters using sticks they find in nature. Here's how to get started.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

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

In this science fair project, students create their own miniature salt flats at home.

Make a spring collage with your child to get them outside and those creative juices flowing!

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

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.

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

This simple experiment serves as an introduction to the greenhouse effect.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Is your child a nature nut with an eye for creative, green-friendly projects? Introduce them to this amazing DIY bird feeder!

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.