Lesson3
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This document discusses maps and how they represent the spherical Earth on a flat surface. It introduces key map concepts like scale, direction, key and legend. It explains that early people knew the Earth was round through observations of lunar eclipses and by sailing long distances. It also discusses different types of map projections that have been used to translate the round Earth onto flat maps.
Lesson3
- 1. Lesson 3
- 2. Maps and Globes Making Pictures of Your World
- 3. The "Languages" of Maps
- 4. Bird’s eye view of the Landscape
- 5. Vertical Aerial Photographs are like maps
- 6. Maps With 3 different scales ：“ is to”
- 7. Scale 比例尺 In scale 成比例的
- 8. 让我们来理解比例尺 妈妈准备了 2 杯果汁和 3 杯牛奶。 我们可以怎样表示这两个数量之间的关系？ 牛奶和果汁杯数的比是 3 ： 2 图上距离 1cm ，表示实地距离 1000m. 那么它们之间的数量关系是什么呢？ 是不是 1 ： 1000 ？ 错 正确答案 1 ： 100000
- 9. Linear scale
- 10. 比例尺 = 图上距离 实地距离 线段式： 数字式： 1:100000 或 公式 表示方式 0 1 2 3 4km 1 100000
- 11. Direction 方向
- 12. How can you find directions? Street Nameplate Compass Sunrise Polar Star Doors & Windows Your Watch
- 13. Key & Legend 图例
- 15. physical
- 16. Weather Map:
- 17. Road Map:
- 18. Treasure Map:
- 20. Satellite Maps
- 22. Playground 线段式： 数字式： 1:500 1 500 或 Legend 图例 Drawer Scale 比例尺 goal basketball stands 6.9m 37m 37m Sail 37m=7.4cm 6.9m=1.38cm 0 5 10 15 25m
- 23. Round and Round Can we put a round picture on a flat map? Stretch （延伸） some areas and shrink （收缩） others
- 25. The earth is round. The challenge of any world map is to represent a round earth on a flat surface. Transformation 变形
- 26. What is the best way to show our world as it really is?
- 27. Ancient People Guess China ： “天圆如张盖，地方如棋局” Shanghai Museum The temple of Heaven
- 28. How did ancient people know the Earth is nearly round!!!!
- 29. Proof 1 Pythagoras: Greek philosopher and mathematician 毕达哥拉斯
- 30. Greek philosopher :Aristotle Proof 2 亚里斯多德 Lunar Eclipse
- 31. solar eclipse 2009.7.22 India
- 32. Magellan Columbus Proof 3
- 33. It is a not perfect sphere. It is flat at the Poles. The Shape of The Earth
Editor's Notes
- #26: There are literally thousands of map projections. Each has certain strengths and corresponding weaknesses. Choosing among them is an exercise in values clarification: you have to decide what's important to you.
- #31: An eclipse is an astronomical event that occurs when one celestial object moves into the shadow of another.