Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

This quick and simple preschool mirror activity will introduce your child to the science of reflection and light with a flashlight experiment and picture game.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

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

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

This cool physics demo illustrates the simple harmonic motion of a pendulum while teaching kids the important concepts of potential and kinetic energy.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

The objective of this science fair project is to observe the properties of friction and apply this knowledge to search for a near-frictionless surface.

In this science fair experiment, kids will use the acid test to discover how to tell one mineral from another.

Take the plunge into handcrafting with this neat and tidy soap recipe. Here's how to create your own personalized soap.

This science fair project idea compares the cuteness reaction between genders.

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!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Want to give your teen some insight into the scientific method and get the house cleaned? This activity promises both!

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

This exploration of different types of energy will help young minds appreciate and observe thermal, kinetic, mechanical, and other forms of energy.

Invite your middle schooler to bungee jump ... with eggs! This experiment will demonstrate Newton's laws of physics in an entertaining way.

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.

This activity turns your kid into the family weatherman. Plus, it teaches him to collect data and begin to understand graphing.

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

What do you get when you combine science and fairies? Fairy scientists who make their own potion, of course! This activity promotes critical thinking skills as your child mixes, experiments, and creates their very own fairy potions.

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

Help your kindergartener expand social studies and science work while creating this lovely bag clip for the holidays.

Build an electroscope, a simple device that measures static electricity, or the freely flowing electrical charges of the atmosphere!

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

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