选修七《Unit 21 Human Biology Bulletin Board》优秀教案

选修七《Unit 21 Human Biology Bulletin Board》优秀教案

Teaching Objectives:

At the end of the class, students will be able to

1. collect and rearrange information related to human cloning by using a web spider;

2. evaluate the pros and cons of human cloning and develop their own attitude towards it;

3. make a speech to voice their opinions on human cloning and propose suggestions on the better use of the technology;

4. develop an awareness of paying close attention to hot issues of social concerns.

Teaching Procedures:

Step 1: Lead-in (1 min)

Ss guess today’s topic by looking at a picture of Dolly.

Step 2: Comprehending (14 mins)

Ss share the information they have collected about human cloning with the help of their information spiders.

Ss learn tips for making a good information spider.

Ss read two texts , note down benefits and concerns of human cloning in key words and add them to the previous spiders.

Step 3: Analyzing (10 mins)

Students retell the benefits and concerns of human cloning according to the notes in their spiders.

Step 4:Evaluating (13 mins)

Brainstorming: Ss are encouraged to propose suggestions on the better use of the cloning technology.

Group Activity: A speech—“Are you for or against human cloning?”

1) Group Discussion: Ss discuss in groups and generate an agreed opinion.

2) Group Writing: Ss complete the drafts for their speeches in groups.

3) Group Presentation: Representatives from each group make a speech in front of the class.

4) Peer Evaluation: Ss give comments on the speeches.

Step 5: Closure and homework assignment (2 mins)

1. Polish the speech and write an essay about the topic.

2. Log on www.cloning.com to follow up the latest development of cloning.