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.

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

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