Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

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.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot move in a pattern related to the sound and rhythm of music.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

This activity is a fun challenge for students who have just started learning to program educational robots.

Here's a science activity to help your child investigate how seeds are designed to travel.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.

In this activity, your student will be invited to build a chair out of building blocks that is designed to meet the specific size and shape of a small doll or toy figure.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

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

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.