Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

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

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

This basketball project explores the best way to make the perfect shot every time.

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!

The fish most kids see is usually filleted, and it's hard to see how it came from a lake or sea. This cool gyotaku activity blends life science with art!

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Help your child make a beautiful homemade sandcastle that will last!

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.