Module5 A Lesson in a Lab教案

answers:
aim: to find out if there’s a change in weight when magnesium burns in air.
apparatus: magnesium, bunsen burner, a balance, a crucible.
method: first, put the magnesium in the crucible. then put the crucible on the balance and weigh it. next, heat the magnesium. light the bunsen burner and hold the crucible over it. finally, weigh the magnesium again.
result: it weighs a little more than before.
conclusion: there is a change in weight when magnesium burns in air.
everyday english
firstly, ask the ss to go through the everyday english on page 48 and choose the correct meanings individually.
then tell the ss where these everyday english sentences from——they are from the above listening. now replay the recording, ask the ss to check what they chose.
answers: 1) a;  2) b;  3) a;  4) b;  5) a.
pronunciation
at first, organize the ss to listen to the recording, at the same time, give them the direction to listen and ask them to pay attention to the intonation of wh-questions and yes/no questions.
then play the tape for the class and ask them again
after that, help the ss to summarize the basic intonation of wh-questions and yes/no questions.
answers: wh-questions often fall at the end. yes/no questions often rise.
and then play the tape again and ask the ss to imitate it.
finally, give the ss more sentences to practice.
homework:
revise the whole module 5 and begin to preview module 6 .
附》關(guān)于本單元模塊整體備課的特別說明：
本人在本單元模塊的整體備課上主要遵循了“創(chuàng)造性、靈活性、有效性”的三大原則，為此，特意對原有教材的編排體系進(jìn)行了重新整合，同時對原有教學(xué)素材進(jìn)行了靈活取舍。但是，這種整合與取舍不是隨意的，主要考慮到以下三個方面因素的制約：第一，為完成應(yīng)有的教學(xué)任務(wù)，實際分配到每個單元模塊的教學(xué)課時一般只有5~6課時；第二，每一課時的信息容量應(yīng)合乎情理；第三，組合的話題之間有時是出于外在形式的需要，但更多是出于其內(nèi)在的必然聯(lián)系（如listening和everyday english之間的組合）。此外，為提高教案的情景化和可操作程度，我適當(dāng)在教案中加入了一些圖片。
需要補充說明一下的是，本教案的閱讀課時安排的是兩課時，但本教案只體現(xiàn)出了一課時左右的內(nèi)容，原因在于另一課時主要集中處理閱讀課文中的語言知識點，大家都輕車熟路了，沒有再累述出來的必要；另外，在處理grammar部分時，我的安排是開始讓學(xué)生主動體驗(experience)和發(fā)現(xiàn)(discover)要講解的grammar, 然后老師集中講解，在講解時考慮到平時語法課的實際效果，所以我在這一步驟的教案上主要使用的是漢語。