第三课

three3

horologe日晷

1. How did the ancients use the sun to time?古人是怎样利用太阳计时的?

2. Material package材料包

3. Small stick, paper jam, glue stick, double sided glue, watch, etc.

小木棍、卡纸、胶棒、双面胶、手表等。

4. Activity process活动过程

5. Know the sundial.认识日晷。

6. The sundial is an instrument of the ancients.

日晷是古人计时的一种仪器。

7. The dial is inclined, and the dial needle faces north.

晷面是倾斜的，晷针朝北。

8. Data Card资  料  卡

9. The sundial was an ancient device that used the shadow of the sun to measure time.

日晷是古代一种利用太阳投射的影子来测定时刻的装置。

10. We see the sun moving from east to west, the shadow of the needle slowly like the pointer of modern clocks

11. Move, to display the moment.

我们看到太阳由东向西移动，投在晷面上的晷针影子像现代钟表的指针一样慢慢移动，以此来显示时刻。

12. Make a sundial model.做日晷模型。

13. How to draw the scale? 怎样画刻度呢?

14. The dial needle and the dial surface are vertical. 晷针和晷面要垂直。

15. Methodological guidance方法指导

16. Attach the sundial model to a flat surface where the sun during the day.

将日晷模型固定在白天一直能被太阳照射到的平地上。

17. Use the compass to direct the compass directly north.

利用指南针使  晷针朝向正北方。

18. Adjust the tilt angle of the dial so that the shadow of the dial needle points at the same time as the clock.

调整晷面的倾斜角度，使晷针影子指向的时刻与钟表的时刻一致。

19. Check the accuracy of sundials at other times.

在其他时间检查日晷的准确性。

20. Outreach activities拓展活动

21. Look for information to understand what ancient timing methods.

查找资料，了解古代还有哪些计时方法。

1．Module evaluation单元评价

2．Knowledge Park知识乐园  

3．Fill in and say.填一填，说一说。

4．The Sun and the Shadow太阳与影子

5．Formation conditions形成条件

6．shadow影子

7．light光

8．Changes in the Day一天中的变化

9．length长短

10．horologe日晷

11．fabrication制作

12．Science Hall科学殿堂

13．Find information and make a "shadow light"查找资料,做盏“无影灯”

14．Reflection on Space反思空间

15．My harvest我的收获

16．●The shadow of the object is shorter at noon. 物体的影子在中午时较短。

17．What I want to improve on the我想改进的

18．●The way to make a sundial.制作日晷的方法。

19．I want to continue exploring the我想继续探究的

20．The changing law of the shadow of objects in the year. 一年中物体影子的变化规律。