Step 9. Discussion

　　Show them some pictures about the polluted sea and many living things which are in danger and ask them: What are their opinions about it? In order to let them have free choice, I give them another topic: The sea is being polluted. What should they do?

　　Purpose: I mean to give them emotional education. I give them multi-media pictures to arouse their interest of study and their love for life. I mean to make them realize: The sea is in danger!

　　I teach them to do their best to help it and do something from now on. Everyone should do something to love and protect our home.

　　Step 10. Homework

　　Write an article Saving the sea. I want to improve the ability of their writing. At the same time, train the ability of do-it-yourself and looking up the information by themseleves.

　　Part 4. Blackboard design

　　Unit 16 Lesson 63

　　Topic Sentences:

　　1. Some living things can live in Antarctica.（what）

　　2. The whale feeds on small fish.（what）

　　3. The sperm whale feeds on squid.（difference）

　　Discussion:

　　1. The whales are in danger. What’s your opinion about it?

　　2. The sea is being polluted. What should we do?

　　In my opinion, the blackboard design can reflect the teacher’s ability of mastering the text and leading the students to master the text easily.

　　In this text, the design is not easy to write. I write the topic sentences on the blackboard in order to tell the students that this is of the importance in this class. The discussion is of the difficulty.

　　I want to make the design inductive, instructive and artistic.