This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project idea produces sounds by creating vibrations using different objects.

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Help your kindergarten or first grade child use his creativity to make a beautiful magnetic patterned structure while discovering the wonders of magnets.

This is a fun way to introduce kids to the concept of volume, and give them a quick hands-on activity to boot.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

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.

Engineers in training can get started with this simple wheel-and-axle construction activity.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

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