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 science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

This science experiment tests if dog saliva can really help heal wounds.

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

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

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

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

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

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

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

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

Discover whether a metal will expand under hot water.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

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

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

Find out which kind of bubble wrap fares best when put in impact.

This science fair project idea examines which type of insulation holds in the most heat.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This project investigates the affect of storage temperature on microwave popcorn.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.