Unit 4 Entering the new countryside -- position and transformation 走进新农村——位置与变换 Lesson 1 Culture center、 Residential area、 Phoenix Mountain Scenic Area、 Peony Pavilion、 Willow weaving technology factory、Apartment for the elderly 文化中心 住宅区 凤凰山风景区 牡丹亭 柳编工艺厂 老年公寓 The residential area is to the north of the Peony Pavilion. 住宅区在牡丹亭的北面。 What questions can you ask? 你能提出什么问题？ Cooperative exploration 合作探索 what direction is the phoenix mountain scenic area from the peony pavilion? 1. 凤凰山风景区在牡丹亭的什么方向？ Phoenix Mountain Scenic Area is not due east of the Peony Pavilion, nor due north, but between the east and north. 凤凰山风景区不在牡丹亭的正东方向，也不在正北方向，而是在东面和北面之间。 The direction between east and north is northeast. 东方和北方中间的方向是东北方向。 I see. Phoenix Mountain Scenic Area is northeast of the Peony Pavilion. 我知道了，凤凰山风景区在牡丹亭的东北方向。 Culture center, willow weaving technology factory, apartment for the elderly in the peony pavilion, which direction respectively? 1. 文化中心、柳编工艺厂、老年公寓分别在牡丹亭的什么方向？ The Cultural Center is northwest of the Peony Pavilion. 文化中心在牡丹亭的西北方向。 Lesson 2 What questions can you ask? 你能提出什么问题？ Cooperative exploration 合作探索 How does the gate move? What about conveyor belts and elevators? 1. 大门是怎样运动的？传送带和升降机呢？ The gate moves flat. 大门是平着移动的。 The conveyor belt also moves flat. 传送带也是平着移动的。 The motion of these objects can be thought of as translation. 这些物体的运动都可以看成是平移。 Think about it . What other translational phenomena are there in life? 想一想，生活中还有哪些平移现象？ How does the impeller of the ventilator move? What about car wheels and ceiling fans? 1. 换气扇的叶轮是怎样运动的？汽车轮子和吊扇呢？ The impeller of the ventilator rotates about the central axis. 换气扇的叶轮是绕着中心轴转动的。 When the car is moving, the wheels are...... 汽车行驶时，车轮是...... The motion of these objects can be seen as rotation. 这些物体的运动都可以看出是旋转。 Think about it , what other phenomena of rotation in life? 想一想，生活中还有哪些旋转现象？ Shadow of change 变化的影子 Think about it 1. 想一想 Why is the tree's shadow so short? 树的影子怎么这么短？ Let's study how shadows change! 我们来研究一下影子的变化规律吧！ Choose a sunny day, and determine a few moments of observation and measurement. 选一个有太阳的日子，再确定几个观察与测量的时刻。 We can directly observe and measure the change of the shadow of the big tree. 我们可以直接去观察、测量大树影的变化情况。 You can also find a bamboo pole instead of a big tree and watch its shadow change. 也可以找一根竹竿代替大树，观察它的影子的变化。 Take a measurement 1. 量一量 The shadow's length is..... 影子的长度是...... The moment is...... 现在的时刻是...... The bamboo pole should be upright. 竹竿要扶直。 Let’s talk 1. 说一说 Our group measured a one-meter-long bamboo pole, and the moment with the shortest shadow was...... 我们组测的是1米长的竹竿，影子最短的时刻是...... Our group measured a two-meter-long bamboo pole, and the moment with the shortest shadow was...... 我们组测的是2米长的竹竿，影子最短的时刻是...... The shadow length is different at different times. 不同时刻测出的影子长度不同。 The nearer the noon, the shorter the shadows; The longest moment of shadow is...... 越接近中午，影子越短；影子最长的时刻是...... The moment with the shortest shadow is...... 影子最短的时刻是...... Let’s discuss 1. 议一议 A good way to collect data while observing and measuring. 观察和测量时收集数据的好方法。 By analyzing the data, we can discover the rules and explain the phenomena in our life. 通过分析数据，可以发现规律，解释生活中的现象。 |
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