Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

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

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

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.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Challenge your learner to design and build a city of their own in this creative engineering activity.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Discover how and which salt melts ice the quickest.

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.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

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

In this science fair project, students use the streak test to tell minerals apart from each other.

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

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

Boost your preschooler's attention to detail by getting her to explore the differences between two different pumpkins: large and small.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

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!

Build a bird feeder science craft that brings birds to your yard, and a smile to the whole family's face.

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

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This kindergarten science activity will help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled.

Have your child kick off their summer vacation by making a miniature water slide!

It's easy to plant your own in-home container garden! This planter contains pizza-themed herbs and is a perfect early gardening activity for kindergarteners.

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!