U8、 Arfu's new suit - cm, m recognition 阿福的新衣——厘米、米的认识 Lesson One 第一课 He is three feet long. 身长3拃。 Tell you the length of three, how to make two? 告诉你身长3拃，怎么做成了2拃? Too small. 太小了。 What's going on here? 这是怎么回事? What more questions can you ask? 你还能提出什么问题? You said I said 你说我讲 What's going on here? 这是怎么回事? They are not as long as each other. 他俩的拃不一样长。 Use the same person's weight. 用同一个人的拃量就好了。 The length of an object is usually measured with a ruler. The length of a shorter object is generally measured in centimeters. Centimeters can be represented by letter c. 测量物体的长度通常用尺子。测量较短物体的长度一般用厘米作单位。厘米可以用字母c表示。 Do you know which objects in life are about 1 cm in length? 你知道生活中哪些物体的长度大约是1厘米? The width of my thumb is about one cm. 我的大拇指的宽度大约是1厘米。 How to measure the length of one? 怎样测量1拃的长度? Compare the length of a rope with a rope, then measure the length of the rope with a ruler. 先用绳子比出一拃的长度，再用尺子量出绳子的长度。 Point the thumb fingertip to the "0" scale, and the middle fingertip to a few centimeters. 把大拇指指尖对准“0"刻度，中指指尖对准几就是几厘米。 The following are all line segments. Do you power out their length? 下面画的都是线段。你能量出它们的长度吗? Align the 0 scale line to one end of the line segment... 把0刻度线对准线段的一端..... This line is three cm long 这条线段长3厘米 Lesson two 第二课 It is one meter long. 长1米。 Is it one meter or hundred centimeters? 到底是1米，还是100厘米呢? It's hundred centimeters long. 长100厘米。 What more questions can you ask? 你还能提出什么问题? You said I said 你说我讲 Is it one meter or hundred centimeters? 到底是1米，还是100厘米呢? 100 cm is 1 m ,1 m =100 cm. meters can be represented by letter m. 100厘米就是1米，1米=100厘米。米可以用字母m表示。 How long is one meter? 1米有多长? The height of the table is about one meter. 讲桌的高度大约是1米。 My arms are about a meter long. 我伸开的双臂长约是1米。 The door of the classroom is about one meter wide 教室的门宽大约是1米 |
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