Unit 2 How do you go to school? 教案

Unit 2 How do you go to school？ 教案 1教学目标 1.通过学习和测量感知周长的概念,认识什么是perimeter。 2.区别哪些事物具备周长 学习描画事物的边线。 3.设计小组合作的环节,测量身边事物的周长。 4.通过发现生活中的周长,说说观察到的身边的perimeter,让学生们明白周长在生活中的一些用途。让孩子们意识到身边处处是数学,学数学是为了运用于生活,从而增强学生们学习数学的兴趣。 2学情分析 五年级的孩子已经具备了一定的英语基础和语言的表达能力。但毕竟是用英语教授数学知识,因而在设计本课时特别是涉及到数学知识的环节尽量考虑语言的标准,精炼和简单化。仍需要在一些必要的语言词汇上加注中文解释。在数学知识方面,学生已经具备了一定数学知识的积累。对事物的周长有了一定的认识,在此基础上再准确认识周长的概念,测量事物的周长。 3重点难点 通过学习和测量感知事物的周长,使学生认识简单的周长概念。通过学习使学生能够认识封闭图形的周长并且测量,并且发现生活中更多的周长问题。 教学难点: 1. 让学生通过学习,能熟练运用本课数学术语。 2. 使学生通过学习,测量一些生活中物体的周长,并向大家介绍自己的作品。 4教学过程 活动1【导入】perimeter Warm-up T: Hello boys and girls. I’m YoYo. How are you S: I’m fine .Thanks, how are you T: I’m fine. Nice to meet you. T: Please show me your hands. Wave your hands. Please show me your arms. Follow me. Arms up, arms down, arms left, arms right. Good, sit down please. This girl pleases stand up, turn back, show me your arm, this is my arm. Look, which is longer S: Teacher’s arm is longer. T: Good. Let’s look at more pictures, and please tell me which is longer All together. T: Look at the first picture, which is longer Fish or turtle T: fish is longer T: What are these S: Corn and carrot. T: Which is longer S: corn is longer. T: How about these one Which is longer Ruler or knife S: ruler is longer. T: the last picture, what are these S: bus and car. T: which is longer S: bus is longer. T: great. Maybe these pictures are easy to be seen which is longer, How about these ones Which is longer Pencil or the book Do you know I’m not sure which is longer Can you think How do we know S: we can use the ruler. T: So clever, we can use the ruler to measure the lengths. Do you know measure Yes, we can measure the book,….(造三个句子,解释词意)。How about length This is pencil’s length, this is finger’s length. T: now look at the pencil, how long is it Can you guess S: Is It …. T: don’t forget the measure unit centimeter. Look at this word, It’s so long and more difficult, cm is short for centimeter. Understand I don’t know your guess is right or wrong, we should measure the pencil’s length. But how to measure Do you know T: oh, first we should use a ruler. What’s the next Then, we measure it to the nearest integer. What’s meaning of nearest integer Yes.(举一个约等于的例子)。 T: let’s measure the pencil.one minute. 测量铅笔的长度并且上传。 T:Let’s share your work.看一个孩子的作业请其他孩子判断正确与否。Ok let’s continue, measure the length of the book. S: 学生测量书的长,并且上传答案。 :老师判断答案。Do you think yes or no T: well done. Now we have known the length. Which is lon ... ...