Here's a thought-provoking activity to make new vocabulary words "stick" in the mind of your young learner.

Introduce your fourth or fifth grader to volume by having him build rectangular prisms, and then count each sugar cube to check his volume calculations.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Get back into school with this exciting architecture exploration! In this craft activity your child will research, draw, and build his own school.

A fun activity for a hot day, this will give young kids a chance to experiment with beginning science and math â and splash around in the process!

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Pfeffernusse are spicy and sweet Christmas cookies from Germany. Make a batch of traditional pfeffernusse this holiday season.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

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

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

If it's Easter, it must be time for egg hunts. But we have to admit, most kids would rather take a bite out of a yummy cupcake than a hard-boiled egg.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

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.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Can cells be frozen? This science fair project provides information to answer this question.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

This project examines the concentration of dissolved oxygen in water, with and without oil.