1 Use a single variable to create a problem situation based on a given open sentence. 2  Use input/output model with grade appropriate functions. 3  Use symbols to represent unknown quantities in number sentences.  Use the identity property of multiplication on whole numbers in computations and problem situations.
The Manhattan Project was the government project that took place from 1942 to 1946, the purpose of which was to develop a nuclear bomb. It succeeded on 16 July 1945 at the Trinity Test in New Mexico and went on to produce the two atomic bombs that destroyed the Japanese cities of Hiroshima and Nagasaki during WWII.
The Purpose of the United Nations. After two devastating world wars, the nations of the world got together in San Francisco in 1945 to form the United Nations. The goal was to prevent further wars by pledging to resolve conflicts peaceably or, if that were not possible, to act collectively to reign in rogue nations.he Purpose of the United Nations. After two devastating world wars, the nations of the world got together in San Francisco in 1945 to form the United Nations. The goal was to prevent further wars by pledging to resolve conflicts peaceably or, if that were not possible, to act collectively to reign in rogue nations.