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This science experiment tests whether warm or cold water works best in making cut flowers last longer.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

An home science experiment for older students that teaches about the science behind heat.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

Celebrate autumn with a seasonal bash. Welcome the fall with a festive party for your little one and her friends, full of crafts, snacks and fun games.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

This science fair project teaches students about wilting and browning of salad greens.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

This science fair project idea examines the reason boats are shaped and engineered.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

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