2012高中英语Module53rdperiod优秀教案外研版必修1.docVIP

The Third Period The General Idea of This Period In this period we’re going to learn another reading passage. Teaching Aims 1　.Learn and master the following words and expressions: rust　boil ordinary　steam　float　form　dissolve　add to　keep out of 2.　Learn to describe a simple scientific experiment. Teaching Difficult Points 1.　Enable the Ss to write a report on a scientific experiment. 2.　Learn to use the new words and expressions in this part. Teaching Methods  Reading,　question and answer. Teaching Aids 1.　a tape recorder 2.　a computer 3.　some test tubes,　nails,　Bunsen burner,　balance,　tongs Teaching Procedures Step 1 Greetings 　Greet the whole class as usual. Step 2 Revision 　Show the metals learned in the last period to the class and ask them to name them in English. Step 3 Presentation 　Read the passage to find the answers to the questions. 1.　What’s the aim of the experiment? 2.　What equipment do we need in order to do the experiment? 3.　How long does it take to see whether iron rusts in the three cases? 4.　How can we take the air out of water? 5.　How can oil prevent air entering water? (Show the questions above on the screen.) Step 4 Reading 　Read the passage individually and then discuss in pairs or groups.　It’s a good time to learn the new words and understand the meaning of the passage. Step 5 Call back the answers from the Ss 　1.　It is to find if iron rusts in dry air,　in air－free water or in ordinary water. 2.　We need some test tubes,　test tube holder,　cotton wool,　oil and Bunsen burner. 3.　A week. 4.　We can take air out of water by boiling it. 5.　 Because oil is lighter than water,　it stays on the surface of water. Step 6 Learn the new words 　1.　Ask the Ss to pick out the new words in Passage B. Write the words on the blackboard.  rust,　test tubes,　nails,　Bunsen burner,　boil,　ordinary　　　　　　　　　　　　　　 2.　Read the new words after you twice. Bring out the apparatus on the desk. Step 7 Carefu