Data encryption is an important security measure for sensitive data stored on computers. Pupils learn how to utilize matrices for creating code. They also get a great review of matrix multiplication, inverse matrices, and the identity...

World War I, or the Great War, embroiled the globe in bloody fighting from 1914 to 1918. Learn about the complex alliances that led dozens of countries to go to war, how the war was won, and what life was like for soldiers and civilians....