Time to rock out! Discover the "life" cycle of the average rock using an illustrative stations lab and stimulating pairs game. Roll the dice to determine your fate: will it be melting in magma or chilling out to form igneous rock? The...

[Free Registration/Login Required] Abridged from the full text located at the Gilder Lehrman Institute of American History, this passage provides information about the development of the transcontinental railroad. Paired texts, a text...