人教版 (PEP)四年级下册Unit 1 My school Part B完整版ppt课件

这是一份人教版 (PEP)四年级下册Unit 1 My school Part B完整版ppt课件，文件包含Unit1PartB第4课时课件pptx、Thefourthperiod第四课时教案doc、biggerwav、heavierwav、smallerwav、strongerwav、thinnerwav、P7BLetslearnmp4、P7BLEARNSWF等9份课件配套教学资源，其中PPT共41页， 欢迎下载使用。
The fourth period(第四课时)Part B Let’s learn & Match and say▶ 教学内容与目标课时教学内容课时教学目标Let’s learn        通过图片、实物、课件等并结合孩子们郊游的情景，能够听、说、读、写形容词的比较级形式“smaller，bigger，thinner，heavier，stronger”等。        能够熟练运用上述单词描述人物和事物的特点。        能够了解部分形容词由原形变成比较级时需要双写词尾字母再加-er或者变y为i再加-er这个规则。Match and say        能够运用B部分所学的词汇与句型描述并比较小朋友们钓到的鱼的特征，达到运用语言的目的。▶ 教学重点1. 能够听、说、读、写形容词的比较级形式“smaller，bigger， thinner，heavier，stronger”等。2. 能够灵活运用所学的形容词比较级描述人物和事物的特征差异。▶ 教学难点能够掌握单词heavy， thin和big的比较级的构成方式。▶ 教学准备 PPT课件、课文音频、视频、实物、纸鱼等。▶ 教学过程Step 1: Warm-up & Revision & Lead-in①1. Greetings.2. Let’s do.T：Let’s say and do together.3. Revision.Show the pictures and the words of “Let’s learn” in Part A on the PPT. (出示课件)The teacher asks questions like these：Who is older/younger/taller/shorter? Whose dress is shorter/longer?Students answer these questions to review the learned words and sentences.4. Lead-in.A riddle： T：I can blow it bigger and bigger. I also can make it smaller and smaller. We need lots of them in a party. What is it?Ss：…◆ Teaching purpose①通过热身活动，活跃课堂气氛。再通过简单的问答复习A部分的单词，为本课的单词学习进行预热。猜谜活动极大地调动学生的积极性和好奇心，吸引学生主动学习。Step 2: Presentation1. Learn the words “bigger, smaller”.②T：Yes，the answer is a balloon.The teacher takes out a balloon. Ask a student to blow it. When the student is blowing, the teacher leads the others to say, “bigger，bigger， bigger”. Then the teacher writes down the words “big—bigger” on the blackboard.(Write “-ger” in red chalk.)When the balloon is big enough, the teacher takes it in hand carefully. T：Look! I can make it smaller.The teacher makes the balloon smaller and smaller, and then leads students to say, “smaller， smaller， smaller”. At last，the teacher writes down the words “small—smaller” on the blackboard. (Write “-er” in red chalk.)Show the picture of Mike and Wu Binbin on the PPT. (出示课件)T：They are looking at their feet. Whose feet are bigger?S：Mike’s.T：Yes. Mike’s feet are bigger than Wu Binbin’s. Wu Binbin’s feet are smaller than Mike’s.Lead students to read the words several times.◆ Teaching purpose②延续热身活动的谜语，拿出谜底物品，用气球来演示bigger和smaller，使学生更加直观地理解这组形容词比较级的意义。2. Learn the words “heavier, thinner”.③(1) Present a picture of a pig and its weight on the PPT.T：How heavy is it?Ss：It is 150 kilograms.T：Is it heavy?Ss：Yes，it is.Present a picture of an elephant and its weight on the PPT.T：How heavy is it?Ss：It is 7,000 kilograms.T：Is it heavy?Ss：Yes，it is.◆ Teaching purpose③教师利用同类对比法引导学习“更重的heavier”和“更瘦的thinner”，避免给学生造成误解。同时渗透情感教育，提醒学生注意饮食健康，多运动。T：Which animal is heavier，the pig or the elephant?Ss：The elephant.T：Great! The teacher writes down the words “heavy—heavier” on the blackboard. (Write “-ier” in red chalk.)Lead students to read the words several times.(2)The teacher chooses a thin student and asks him or her to stand up.T：Do you think he/ she is heavy?Ss：No，he/ she is thin.T：Good answer. Can you find a thinner student in our class?Ss：XXX is thinner than him/her.T：Good! Who is thinner than XXX?Ss：…Find the thinnest student in the class in this way.The teacher writes down the words “thin—thinner” on the blackboard. (Write “-ner” in red chalk.)Lead students to read the words several times.Show the picture of Jim and John on the PPT. (出示课件)T：How heavy is Jim?Ss：He is 52 kilograms.T：Who is thinner? And who is heavier?Ss：John is thinner. Jim is heavier.T：Do you know why Jim is heavier? Maybe he eats too much fast food. So we should eat less fast food and exercise more. Then we’ll be more healthy.(Write down the key sentences “—How heavy are you? —I’m…kilograms.” on the blackboard.)Lead students to read the sentences several times. 3. Learn the word “stronger”.④Show the picture of Zhang Peng and Sarah on the PPT. (出示课件)T：Zhang Peng is a helpful boy. Look at this picture. Sarah’s bag is too heavy. She can’t carry it. Zhang Peng helps her. Do you know why Zhang Peng can carry this heavy bag?Ss：…T：Because he is strong. So who is stronger，Sarah or Zhang Peng?Ss：Zhang Peng is stronger.T：Wonderful! So if you are strong，you can help others, too. The teacher writes down the words “strong—stronger” on the blackboard.(Write “-er” in red chalk.)Lead students to read the words for several times.◆ Teaching purpose④情景导入学习“strong—stronger”。同时，渗透情感教育，鼓励学生助人为乐，尽自己的能力多帮助别人。Step 3: Practice1. Watch and read.The teacher plays the cartoon of “Let’s learn”. Students watch the cartoon and try to read after it.2. Play games.⑤(1) Work in pairs. Compare the size of school supplies or body parts.Ask some pairs to show their works.The group which does a good job can get a paper fish.(2) Find the differences and try to describe them.The teacher makes a model：Lily is younger than Lucy.The student who makes a sentence can get a paper fish.◆ Teaching purpose⑤设计以游戏为主的练习环节，不仅可以使学生在一段时间的学习过后放松下来，还可以在愉悦的氛围里对所学知识进行练习与运用。Step 4: Consolidation & Extension⑥“Match and say” 1. Ask the students who get the paper fish to stand up and try to describe their fish.Make a model:My paper fish is thin./ My paper fish is big./ …T：You can find your fish in your book.2. Finish the matching task.T: Today，the children go fishing in a pool. Please observe the fish in the pool. They are different. First，please help each child choose a fish. Match them with a line.3. Ask students to compare each child’s fish. Make a model:Mike’s fish is bigger than Sarah’s./ Sarah’s fish is thinner than Chen Jie’s.4. Show time.Students stand up and say their own sentences. ◆ Teaching purpose⑥通过Match and say这个板块引导学生完成连线任务，并使用所学知识对不同形态的鱼进行描述和对比，培养学生的语言综合运用能力。▶ 板书设计▶ 作业设计1. Write down the key words in the exercise book.2. Do the exercise.▶ 教学反思1. 本节课充分运用动作演示法来导入新课，让学生在观察、比较和发现中去学习新知识，真正体现了“学中用，用中学”的原则。2. 采用创设真实场景、图片对比、实物展示等多种方式教学单词，注重学生学习方法和学习策略的培养，引导学生自主学习。3. 多个游戏活动的设计激发了学生的学习兴趣，调动了学生的学习热情，营造积极的学习氛围，很好地吸引了学生的注意力。4. 整个课时环节紧密，流程清晰，能够很好地达成本课时的教学目标。5. 充分利用身边的道具，让学生在体验中学习，在学习中体验，使他们在比较中加深了对形容词比较级的理解，学习起来更加轻松。▶ Teaching Contents & Teaching AimsLet’s learn        Be able to listen，speak，read and write the comparative adjectives “smaller，bigger，thinner，heavier，stronger” through pictures，actual objects courseware and other methods.        Be able to use the words above to describe the characteristics of people and things.        Understand the rules that some adjectives from the original form to the comparative form require the double suffix letter and then plus “-er” or change “y” into “i” and then plus “-er”.Match and say        Use the words and sentence structures learned in Part B to describe and compare the characteristics of the fish the children caught. ▶ Teaching Priorities        Be able to listen，speak, read and write the comparative adjectives “smaller，bigger，thinner，heavier，stronger”.         Be able to flexibly use the comparative forms of adjectives to describe the differences between people and things.▶ Teaching Difficulties        Be able to master the comparative forms of the words “heavy，thin，big”.▶ Teaching ProceduresTeaching StagesTeacher’s ActivitiesStudents’ ActivitiesTeaching PurposesWarm-up&Revision&Lead-in1. Greetings.2. Let’s do.3. Review.4. Lead-in.1. Greetings.2. Say and do together.3. Answer some questions.4. Guess a riddle.Arouse students’ interest in learning. Lead students to review the adjectives they have learned in Part A. Lead in the new lesson.Presentation1. Teach the words “bigger，smaller”.Watch the balloon get bigger.Watch the balloon get smaller.Learn the words.Use a balloon to show “bigger” and “smaller”，and make students understand the meaning of the adjectives intuitively.2. Teach the words “heavier, thinner”.Learn the new word “heavier” by observing the pictures and answering the questions.Learn the new word “thinner” by searching for the thinnest student.Use the comparison method to teach “heavier” and “thinner”.  Avoid misunderstanding. Emotional education： Pay attention to a healthy diet and do more exercise.3. Teach the word “stronger”.Observe the picture and answer the teacher’s questions.Learn new words in context. Emotional education： Do the best to help others.Practice1. Play the cartoon of “Let’s learn”.Watch the cartoon and try to read after it.The design of a game-based practice can not only help students relax after a period of learning, but also practice and apply the knowledge in a pleasant atmosphere.2. Play games.Work in pairs. Compare the size of school supplies or body parts.Find the differences between the two girls in the picture and try to describe the differences.Consolidation&Extension“Match and say”1. Ask the students who get the paper fish to stand up and try to describe their fish.2. Finish the matching task.3. Ask students to compare each child’s fish.4. Show time.1. Stand up and try to describe their fish.2. Finish the matching task.3. Compare each child’s fish. 4. Stand up and say their own sentences.Lead students to finish the matching task. Let them use the knowledge to describe and compare different forms of fish，so as to cultivate students’ comprehensive language using ability.Homework1. Write down the key words in the exercise book.2. Do the exercise.