If there are nine people in a room and every person shakes hands exactly once with each of the other people, how many handshakes will there be? How can you prove your answer is correct using a model ...

Mary Klinefelter’s Golden Rule Insurance Co. health plan said it would pay 100 percent of the costs associated with routine physical exams. Just to be sure, the Orland Park resident called Golden Rule ...

Mathematics education through problem posing is an evolving field that investigates the formulation of new mathematical problems as a means of deepening conceptual understanding and fostering creative ...