This science fair project idea explores how length affects the weight a bridge can hold.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

This science fair project examines how seeds hitchhike on animals and clothing.

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

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

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

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!

Help your child create a tasty treat that will demonstrate exactly how frogs survive a freezing season.

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

This science fair project investigates why the number of visible stars changes from place to place.

Which do you prefer: real or artificial? Try this sweet little taste experiment to help your kids develop a better awareness of the food they consume.

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

This science fair project idea investigates if fats add to the flavor of food.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

This clay "painting" activity encourages and supports creative development and critical thinking skills.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea examines which type of insulation holds in the most heat.

This science fair project idea explores the different properties of matter.

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!