2nd - 5th Grade Engineering and Science Inquiry Resources

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

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

Will the shape of an ice cube impact how fast the ice melts?

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

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

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.

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.

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.

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

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.

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

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

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.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

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

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

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

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

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

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

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.

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!