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

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

This classic children's game demonstrates how sound travels through air vs. through a solid.

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.

This project examines whether people's taste perception is influenced by what they see.

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

Transform your uncomfortable wooden shoes into charming mini planters!

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

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 works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

Help your kindergarten science maven explore the water cycle without getting everything wet.

In this project children practice the scientific method while playing with puffy paint.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

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.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

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.

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!