What is pi? Simple geometry – Math, circles, circumference, diameter
What is pi? The geometry of a circle What is pi? Pi is a number that is just a little bigger than 3.14. It is the number you get if you divide [...]
What is pi? The geometry of a circle What is pi? Pi is a number that is just a little bigger than 3.14. It is the number you get if you divide [...]
Mentuhotep II, Pharaoh of the Middle Kingdom What was the Middle Kingdom? Historians (since about 1845) have divided the history of Bronze Age Egypt into three big chunks, with political [...]
This scene is from the tomb of Ti, who was an important government official in the Middle Kingdom. With the collapse of the Old Kingdom about 2160 BC, there was [...]
Himalaya Mountains: part of the Chinese environment China's like a staircase Sometimes people describe China's landscape as being like a staircase with three steps. The top step of this Chinese [...]