Roy Rosenzweig Center for History and New Media
European Explorers
To compare how the Spanish, French, and English approached the exploration of North America, class groups examine primary source documents and become experts on one of four explorers: Francisco Coronado, Robert LaSalle, Samuel de...
EngageNY
Sums and Differences of Decimals
Sometimes dealing with decimals is so much easier than dealing with fractions. The ninth lesson in a 21-part module has the class consider situations when it might be easier to add or subtract fractions by first converting to decimals....