Mathematics in Mesopotamia : Where did mathematics begin? ; Political history in Mesopotamia ; The number symbols ; Arithmetic operations ; Babylonian algebra ; Babylonian geometry ; The uses of ...

Bernhard Riemann was a man with a hypothesis. He was confident that it was true, probably. But he didn’t prove it. And attempts over the last century and a half by others to prove it have failed. A ...

Materials were written for an entire year's course in geometry in which transformations were used to develop the concepts of congruence, similarity, and symmetry, as well as being a vehicle for proof.