Everything you need to understand or teach Alaska by James A. Michener.
Approximately a billion years ago there was a protuberance in the northwest corner of what was to become North America. This landmass would become the future Alaska. A half billion years ago, this landmass had no mountains or trees or other growth. In winter, the sun remained low in the sky for six months while summer temperatures could reach 120 degrees Fahrenheit. Some sea life was moving onto land at this time.
Alaska Lesson Plans contain 91 pages of teaching material, including: