简述教学多媒体的呈现

利用多媒体课件，能够起到丰富教材内容，引人入胜的效果。方便学生更好地欣赏美术作品，更深地感受美术作品。使教学课件具备视、听、赏、析、动多种功能。充分激发学生进行美术学习、美术创造和美术审美活动。利用网络学习。加强学生自主学习、探究学习的能力，方便学生创作交流、适应社会发展，这也是教学方法与时俱进的一种标志。

(1)小学英语教学中使用多媒体的方法①巧用多媒体，激发学生的学习兴趣。
②巧用多媒体，创设情境，引入新课。
③巧用多媒体，活化教材，寓学于乐。
④巧用多媒体，提高利用时间的效率。
⑤利用网络技术，扩展学生的知识面。
(2)Teaching Aims
Knowledge aim:Students will be able to learn and master the structure to describe animals.
Ability aim:Students can make sentences through imitation of the example.Their abilities of making sentences?can be improved.
Emotional aim:Students will get more interest in learning English and in protecting animals.
(3)导入环节和新知呈现环节
Lead—in(导入环节)：
①Show the video about different kinds of cats.Ask students some questions:
Q1:What can you see in the video?
Q2:Which kind of pet do you like best?
②Free talk.
Ask some questions about pet,for example:
Q1:Have you ever kept a pet?
Q2:How does it like?
Q3:What color is it?
Q4:When is its birthday?
【设计意图1
视频和讨论的目的是为了吸引学生的注意力，同时明确本课的话题。
Presentation(新知呈现环节)：
Show the picture about kittens.
①Show the first picture,and ask students"What's this?".Students may give such answer as"They are pigs""They are mice",and so on.
②Show other pictures.Student will understand that they are kittens.
③Ask students to pay attention to the date and reorder the pictures.
Read and match.
①Show some sentences about pictures and ask students to try to match it.
Such as:
They have white fur.May 3rd.
They can walk.April 21st.
②Let students review the knowledge they learned about the date:We should put the"on"before the month.
③Make sentences through imitation of the example"Their eyes are open on April 26th."
Invite some students to write two sentences about the kittens on the blackboard.
Ask students to make new sentences to describe the animals they like.
【设计意图】
通过图片让学生更形象地感受到小猫的变化。通过句子配对的方式，让学生学会组词造句，提升描述事物的能力。

(1)多媒体教学的优点：刺激与丰富学生的想象，激发学生的学习兴趣；充分调动：学生的各种感官，加深学生的理解和记忆；拓宽学生的学习渠道，有利于学生的自主学习。 多媒体教学的缺点：受设备限制；过度地使用容易分散学生对课堂教学内容的注意力；，
(2) Teaching Aims
Knowledge aims: ① Students can learn some new words: mutton, eggplant, grape, sour,fresh.
② Students can master the new sentence pattern:What would you like for lunch? —I'd like ...
Ability aim: Through Q&A and group work, students can describe their favorite food for lunch.
Emotional aim：Students can know the importance of healthy eating habits in their daily life and make up their minds to form a good habit of eating．
(3)导入和呈现环节
Warming up and lead-in(导入环节)：
①Daily greeting．
②Let students have a brainstorming about food in their daily life，and then ask them about their favorite food for lunch．
【设计意图】
头脑风暴有利于激发学生积极思考，提高课堂氛围，为引出新课做好铺垫。
Presentation(呈现环节)：
① Words learning
Teach "mutton" "eggplant" and "grape": Draw some pictures and lead students to guess what they are, and then teach the new words.
Teach "sour" and "fresh" : Describe their flavor and then teach the new words.
All the new learnt words need to be read after the tape for three times. Teacher should pay more attention to students' pronunciation.
② Sentence learning
Show a picture about a restaurant on the screen.
T: Welcome to my restaurant. Here are some foods for you. For example, cabbage, green beans, mutton, tofu,beef, eggplant, grapes. What would you like for lunch? I'd like eggplant.
Lead students to answer. I'd like ...
Ask students to listen to the tape carefully, find out the new sentence pattern "--What would you like for lunch? I'd like ..." and read after the tape for three times. Then teach the new sentence and let students make up some sentences using the new words.
【设计意图】
设计“餐厅”情境，让学生在接近生活的真实语言环境中感知和体会句型的使用；通过情境把新单词和句型融合在一起，在进行句型教学的同时巩固对单词的学习。

①在创设学习物理概念的情境环节，可以利用视听光盘或多媒体课件等，播放一段声音(有电子琴、小提琴、长笛、古筝演奏)让学生辨别这些分别是什么乐器。学生根据自己的生活经验，进行辨别。随后教师引导学生认识声音有“大小、高低、乐器音色”的不同。这样就可以让学生进入良好的物理概念学习环境。 ②在建立物理概念环节，可以借助广播和电视音像资料，让学生认识大自然中许多发射和接收超声波的动物，认识人类是否能听到声音与物体振动的频率有关。另外可以通过演示示波器中声波的波形，理解声波频率的不同，振动波形不同，音调不同。在响度的学习过程中，可以借助音频文件，播放蚊子的叫声与黄牛的叫声。让学生判断声音的音调和响度，同时让学生辨析音调和响度是声音的两个不同的特征。响度大的声音．音调不一定高，音调高的声音，响度也不一定大。因此，应用多媒体资料可以让学生在对物理概念的形成过程中更形象、更直观地形成科学的认知。
③在运用物理概念环节，可以让学生观看视频“利用声音击碎玻璃杯”，让学生利用学过的知识来解释这一现象。学生在观看的时候会形成很大的冲击，记忆深刻；通过前面概念的学习，可以分析出这一物理过程和声音的频率有关，通过这一活动，学生对所学概念将有更深刻的认识。

(1)小学英语教学中使用多媒体的方法 ①巧用多媒体，激发学生的学习兴趣。
②巧用多媒体，创设情境，引入新课。
③巧用多媒体，活化教材，寓学于乐。
④巧用多媒体，提高利用时间的效率。
⑤利用网络技术，扩展学生的知识面。
(2) Teaching Aims
Knowledge aim: Students will be able to learn and master the structure to describe animals.
Ability aim: Students can make sentences through imitation of the example. Their abilities of making sentencescan be improved.
Emotional aim: Students will get more interest in learning English and in protecting animals.
(3)导入环节和新知呈现环节
Lead—in(导入环节)：
①Show the video about different kinds of cats. Ask students some questions:
Q1: What can you see in the video
Q2: Which kind of pet do you like best
②Free talk.
Ask some questions about pet, for example:
Q1: Have you ever kept a pet
Q2: How does it like
Q3: What color is it
Q4: When is its birthday
【设计意图1
视频和讨论的目的是为了吸引学生的注意力，同时明确本课的话题。
Presentation(新知呈现环节)：
Show the picture about kittens.
① Show the first picture, and ask students "What's this". Students may give such answer as "They are pigs""They are mice", and so on.
② Show other pictures. Student will understand that they are kittens.
③Ask students to pay attention to the date and reorder the pictures.
Read and match.
① Show some sentences about pictures and ask students to try to match it.
Such as:
They have white fur.May 3rd.
They can walk.April 21st.
② Let students review the knowledge they learned about the date: We should put the "on" before the month.
③ Make sentences through imitation of the example "Their eyes are open on April 26th."
Invite some students to write two sentences about the kittens on the blackboard.
Ask students to make new sentences to describe the animals they like.
【设计意图】
通过图片让学生更形象地感受到小猫的变化。通过句子配对的方式，让学生学会组词造句，提升描述事物的能力。