七年級數(shù)學下教學設(shè)計及擴展資料-資料下載頁
2024-10-25 14:10本頁面
【正文】 一方向移動，會得到一個新的圖形，新圖形與原圖形的形狀和大小完全相同。（2）新圖形中的每一點，都是由原圖形中的某一個點移動后得到的，這兩個點是對應(yīng)點。（3）連接各組對應(yīng)的線段平行且相等。圖形的這種變換，叫做平移變換，簡稱平移探究：設(shè)計一個簡單的圖案，利用一張半透明的紙附在上面，繪制一排形狀，大小完全一樣的圖案引導(dǎo)學生找規(guī)律，發(fā)現(xiàn)平移特征三、典例剖析深化鞏固例如圖，（1）平移三角形ABC，使點A運動到A`，畫出平移后的ΔABC先觀察探討，再通過點的平移，線段的平移總結(jié)規(guī)律，給出定義探究活動可以使學生更進一步了解平移四、鞏固練習課本33頁：1，2，4，5，6，7五、小結(jié)：在平移過程中，對應(yīng)點所連的線段也可能在一條直線上，當圖形平移的方向是沿著一邊所在直線的方向時，那么此邊上的對應(yīng)點必在這條直線上。2利用平移的特征，作平行線，構(gòu)造等量關(guān)系是接7題常用的方法。六、作業(yè)課本P30頁習題5。4第3題擴展資料：教學設(shè)計七年級下教學設(shè)計七年級下 Unit 5 I am watching A(period 1)By Amy一、Teaching aims:(1)Vocabulary: doing homework, watching TV, cleaning, eating dinner, reading a book, talking on the phone, apartment(2)(3)Learn how to talk about what people are students cultivate the spirit of 、Teaching key and difficult: The present continuous 、Teaching preparation: ppt, 、Teaching steps: Step 1 Greeting Step2 Revision What do you(does he/she)do? What do you(does he/she)want to be?Why?(通過復(fù)習一般現(xiàn)在時的句型結(jié)構(gòu)為下面的現(xiàn)在進行時的學習起一個比較的作用。）Step3 Presentation to a song（聽一首活潑愉快的歌曲，既能激發(fā)學生的學習興趣，又能順利地過渡到現(xiàn)在進行時的學習） out the new phrases and target languages.(Show some pictures on the screen and ask some students to perform the actions.): What are you doing ? S: I am doing homework.（Help him/her to answer）T：What is he /she doing ? Ss: He /she is doing : watching TV,cleaning reading a book, eating dinner, talking on the phone...as the same way.（通過多媒體課件顯示和學生的親自表演，目的是讓學生在真實情景中學習短語和感受出現(xiàn)在進行時的結(jié)構(gòu)和用法。）Step 4 Practice and answer in pairs: What is he/ she doing? He/She’s... A:What are you doing ? B: I am doing :What is he/ she doing ? C:He/ She39。s doing homework.(要求三個學生為一小組，進行問答練習。這樣的活動既可以培養(yǎng)學生的合作意識，又能在情景中用現(xiàn)在進行時交際，鞏固了本節(jié)課的重點，從而突破了難點，促使學生在學習過程中學會細心觀察。)3．The structure of present progressive tense and the present participle.（讓學生觀察句子和現(xiàn)在分詞形式分別總結(jié)出現(xiàn)在進行時的結(jié)構(gòu)和怎么給動詞加ing,培養(yǎng)學生的觀察能力和歸納能力。）Step 5 Practice 1a and 1c the words with the people in the pictures in Section A(1a), ask and answer questions about the some pairs to act out their conversations.(1c)Step 6 Listening 1b接下來的任務(wù)型聽力要求學生對動作作出反應(yīng)，教師可承接剛開始的話題，引導(dǎo)學生根據(jù)所學語言完成以下任務(wù)： are the people doing? numbers from 1a the answers in pairs like this: A: What is Jenny doing? B: He is watching : What are Dave and Mary doing? B: They are eating : What is John doing?B: He is doing homework.(通過聽力訓練，現(xiàn)在進行時的結(jié)構(gòu)得以很好的落實)Step 7 exercises(口頭及時考查學生以不同的字母為結(jié)尾時加ing的情況以及不同的人稱后be的變化形式。筆頭考查本節(jié)課掌握知識的情況。)Step 8 Summary and Homework design and copy the new words and target a picture of school park club zoo and talk about “What are they doing板書設(shè)計Unit 5 I’m watching TV.(Section A 1a1c)doing homeworkWhat are you doing ? watching TVI am watching What is he/she doing? eating dinnerHe/She is on the phone 現(xiàn)在進行時結(jié)構(gòu): 主語 + am/ is / are+ 動詞的現(xiàn)在分詞五、The class reconsiders：ppt效果好，直觀形象、知識面廣、內(nèi)容豐富。學生較輕松的接受了新內(nèi)容。
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