Before iPhones and calendars, how did humans determine the seasons of the year? Middle school scientists discover how to use shadows to determine the time of year in an enlightening interactive. Pupils manipulate the sun and examine the...

From days of 24 hour sunlight, to endless nights that last for days, the Arctic is a very unique place to live. Examine the seasonal changes that occur in the northern-most reaches of the globe and the impact they have on the plants and...

With a simple blackboard-style appearance, these slides list facts about the reason for the seasons, solstices, and equinoxes. It also touches on Kepler's first law of planetary motion. There are no pictures or graphics to help explain...

Sixth graders conduct a controlled investigation to determine the length of the sun's shadow on a fixed object (i.e., flagpole, telephone pole, etc.) over a three-day period (one day in the fall, one in the winter, and one in the...