Your learners have probably heard of climate change, but do they really understand what it is? Study the history, details, and future implications of global warming and the greenhouse effect with a set of activities designed for an...

The Mongols, Spanish, and Ottomans all rewrote history with their conquest and control of empires. Yet, each made its mark differently. Using a variety of secondary and primary sources, pupils consider the similarities and differences...

How have railroads influenced urban growth? What are the consequences of population booms? What has led to the growth of tech centers like Silicon Valley? A series of short-answer questions from the College Board explores the dynamics in...

Currently, only 2.1% of global warming is felt on continents, while over 93% is felt in the oceans. The fourth lesson plan in the series of 21 on global warming is composed of three activities that build off one another. In the...