Introduction Do you ever use math as a tool to solve interesting problems? In the 1970s math was often taught with simple worksheets. One teacher was looking for a way to help his students have more ...

The perimeter is the total distance around the edge of a 2D shape. Since it is a length, the metric units for perimeter are millimetres (mm), centimetres (cm), metres (m) and kilometres (km).

The Great Pyramid of Giza is often treated as a monument of stone, but it also functions as a monument of numbers. I see at least fifteen tightly documented geometric and astronomical puzzles embedded ...