Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Make sourdough bread...and learn some colonial history and modern science in the process!

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

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.

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.

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.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Challenge your learner to design and build a city of their own in this creative engineering activity.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

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

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

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

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

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

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This easy at-home experiment is a great way to "see" science.

This science fair project idea compares biodiversity between drops of water.

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

The purpose of this science fair project is to build a basic radio.

This science fair project idea investigates how color affects temperature.

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