人教新目标版九年级全册Unit6 period 1SecationA 1a -4a (共30张PPT)

unit 6 When was it invented? It was invented in the sixth century. China is an old country with a long history of about five thousand years. When was it invented? abacus Who was it invented by? It was invented by ----. When was it invented? It was invented in ----. --------- gun powder the ancient Chinese people compass Bi Shen printing Han Dynasty Cai Lun paper making Han Dynasty when who things Who was it invented by? When was it invented? What is this called? Tang Dynasty During the time of War Period Song Dynasty Pair work. --------- gun power the ancient Chinese people compass Bi Shen printing Han Dynasty Cai Lun paper making Han Dynasty when who things This is called _______. It was invented by ______, and it was invented in ________. Tang Dynasty During the time of War Period Song Dynasty Free talk. Guessing games There are also many modern inventions in the world. What invention is it? Here is a box with a be