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Construct batteries that make electricity from fruits with this fun science fair project.

Fruit Battery

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.

Design Challenge: Egg Drop

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

The Answer is Blowing in the Wind

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Design Challenge: Inflate a Balloon

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

Design Challenge: Creating a Cup Tower

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Gender Probability: Male and Female Chromosomes

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

Design Challenge: Making a Catapult

Along with being an interesting science activity, dehydrated strawberries are also tasty &acirc; and healthy!

Dehydrating Strawberries

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Floating Paper Clip

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

How to Separate Salt from 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.

How to Make a Lemon Battery

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Counting Tree Rings

Have your child kick off their summer vacation by making a miniature water slide!

Design Challenge: Making a Water Slide

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

How Do Icicles Form?

In this activity your child will create their very own marble maze!

Design Challenge: Marble Labyrinths

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Determine the Effect of Gray Water on Plant Growth

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Star Clock

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Mineral Streak

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Design Challenge: Make a Rube Goldberg Machine

This project examines whether playing music during class helps students learn or if it distracts students from learning.

Does Music Help or Distract from Classroom Learning?

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Inverse Square Law: How Does Distance Affect the Spreading of Light?

What heats up faster&acirc;water or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Specific Heat of Water vs. Specific Heat of Sand

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

Design Challenge: Building a Bridge

In this design challenge, your child will make a bottle rocket using typical household items.

Design Challenge: Making a Bottle Rocket

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old &ldquo;why&rdquo; questions. As you walk with your child, you can encourage them to ask questions.

Inspire Simple STEAM Exploration

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

Design Challenge: Making a Boat

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

How A Kazoo Makes Sounds

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Compost Sorting

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Rust Chemistry: How Does Rust Form?

In this lesson, students will solve a design problem as they create a marble maze out of LEGO bricks.

LEGO Marble Maze

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