Preschool - 4th Grade Science Activities : Page 2

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this activity, your child will be challenged to make a tower using paper cups.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Start your toy engines -- this is going to be a fast and friction-filled race!

Take a dive into the candy jar with this yummy science experiment.

This science fair project idea investigates how magnetism can defy the force of gravity.

Discover how and which salt melts ice the quickest.

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

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Your preschooler will engage their senses by making a scented pumpkin to decorate your house.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

This science fair project idea investigates which objects float and sink in honey, water, and oil.