第六课

Lesson 6  compass

第六课 指南针

1 Activity preparation

活动准备

2 Fine line, blow molding paper, plastic cup

细线·吹塑纸·塑料杯

3 The activity process

活动过程

4 Recognize the compass

认识指南针

5 The compass is one of the four great inventions in ancient China.

指南针是我国古代四大发明之一。

6 More than two thousand years ago, our ancestors made Sinan out of magnets, the world's 6first directional instrument.

早在两千多年前，我们祖先就是用磁石制成了司南，这是世界上最早的指示方向的仪器。

7 Later, the compass was invented.

后来，人们又发明了罗盘。

8 Use a compass使用指南针

9 Method guidance

方法指导

10 Level the compass and let the small magnetic needle turn freely.

把指南针放平，让小磁针自由转动。

11 After the small magnetic needle comes to rest, turn the chassis so that the scale indicating north on the direction indicator dial coincides with the red end of the small magnetic needle.

小磁针静止后，转动底盘，使方向指示盘上表示北的刻度线与小磁针红色的一端重合。

12 Determine the direction against the direction dashboard.

对照方向指示盘确定方向。

13 Make a compass.制作指南针。

14 Method guidance; use one end of the magnet to rub the steel needle in the same direction several times, the steel needle is magnetic.

方法指导；用磁铁的一端多次向同一方向摩擦钢针，钢针就有磁性了。

15 Expand your activities拓展活动

16 Use a homemade compass to identify directions.

利用自制的指南针辨认方向。

17 The Temple of Science

科学殿堂

18 Try it, and there's a change in the number of paper clips magnets attract.

试一试，磁铁吸引曲别针的数量有什么变化。

Unit 3 recognizing the weather

第三单元 认识天气

Cloudy and sunny, wind and snow, weather changes affect a lot.

阴和晴，风和雪，天气变化影响多。

Swallows fly low, fish jump, weather changes are known.

燕低飞，鱼儿跳，天气变化早知道。