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 project's roots lay in scientists' fears since the 1930s that Nazi Germany was also investigating nuclear weapons of its own. born out of a small research program in 1939, the Manhattan Project eventually employed more than 130,000 people and cost nearly $2 billion USD ($24 billion in 2008 dollars based on CPI). it resulted in the creation of multiple production and research sites that operated in secret.