Preschool - 3rd Grade Engineering and Science Inquiry Resources

Explore scientific concepts with this experiment that introduces kids to the scientific method!

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Use pepper and soap to discover some fun facts about the properties of water.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

This science fair project idea determines what household items are good conductors of electricity.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

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

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

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.

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

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.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

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

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

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

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

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

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.