2. --09 Chinese Class (1) Group 404 梁妹 孙晓菲 冯静婷 尤秋映 袁菁唯 董艾冰

3. What is the most representative thing of China ? Do You Know?

4. We think they are the four great inventions of ancient China.

5. The Four Great Inventions Of Ancient China Compass Paper making Gunpower Movable type printing

6. Compass 指南针

7. Compass The compass is one of Chinese four great inventions. Its predecessor is Sinan. It is a simple instrument that is used to determine position.

8. The invention of the compass: The invention of the compass doesn’t have the exact time and inventors. Chinese ancient scientist Shen Kuo who lived in the Song dynasty had been improved to produce various styles of the compass standing on the basis of previous studies.

9. The effect of the compass : The compass is used to identify the direction. It is usually used in navigation,geodesy, travel and military fields. The compass has been used in the West of overseas adventure.

10. Paper-making 造纸术

11. Before the paper was invented, our ancestor had used these to record things… tortoise shell animalbone

12. metals and stones

13. In A.D. 105 years Cai Lun Improved the technology of paper-making and the paper was widely used

14. The invention of paper promotes the spread of science and culture, and have a profound influence on social progress and development

15. One of Chinese four great inventions （火药）

16. Gunpowder arrows Copper handguns These are photographs of different periods of the gunpowder

17. Gunpowder Meaning: The gunpowder is heated immediately after the explosion or the impact of compounds or mixtures.

18. History : The invention of the gunpowder is the long-alchemy, pharmacy practice results, has been a thousand years of history. Effect : Chinese gunpowder make a great promotion for the history of the world.

19. Movable-type printing 活字印刷术

20. One of the four great inventions of China Invented in the mid-eleventh century Bi Sheng is the inventor

21. Influence the world in many countries, movable type is a major contribution of China to the world progress. Improve work efficiency Promote the dissemination of culture Promote the development of education

22. Movable type

23. Division of work Hostess —— 艾冰 Compass—— 晓菲 Paper-making—— 秋映 Gunpowder—— 梁妹 Movable type—— 菁唯 Proofreader —— 静婷

24. Bye Bye!