1st - 4th Grade Engineering and Science Inquiry Activities

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

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

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

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

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

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

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.

This science fair project idea explores the different properties & interactions of sugar molecules.

This science fair project idea experiments with spinning color wheels and optical illusions.

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

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

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 teaches about mold. Students will test different foods to see which grow mold the fastest.

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

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

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

Learn all about balance and motion as your child designs a corn maze!

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!

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

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

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.

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.

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.