A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

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

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

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

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science fair project idea explores whether white light can be separated into different colors.

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.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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

In this science fair project, students make their own rain gauge to measure rainfall.

This project determines what category of person is most likely to be ticklish.

This science fair project investigates why the number of visible stars changes from place to place.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Discover whether a metal will expand under hot water.

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

In this science fair project you will make a model of a cell membrane using very simple material.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

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

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!