Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Want to help make studying the nervous system a little more fun? This thinking cap is a great way to learn external human brain anatomy.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

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.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

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

The goal of this project is to create an exciting topographical map out of dough.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This simple experiment serves as an introduction to the greenhouse effect.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

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.

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

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

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