必修五Unit1 Great Scientists 教案.doc

Unit 1 Great ScientistsKnowledge Aims:1. To learn some words and expressions related to the description of the great scientists, and the personal traits of making a great scientist.2. To make sure the students have a full understanding of the text by reading and translating. Read many times for memorizing some key sentences.3. To guide the students to have a discussion about the characters in the text.Ability Aims:1. To cultivate the students reading ability and deepen their understanding how to describe a great person and his/her personal achievement and contribution to the humankind.2. To cultivate the students oral English skills and related knowledge about description of a great persons deeds.Teaching important points:1. To make the students have a full understanding of the text.2. To let Ss have good command of grammar points by analyzing the key sentences.Teaching difficult points:1. To improve the students reading ability and their grammatical analysis ability.2. To enable the students to voice their opinions freely.Teaching materials:1. Multi-media Teaching Assistant.2. Some related pictures. Teaching aids:1. Multi-media facilities.Teaching methods:1. Asking-and-answering method.2. Discussing method.3. Elicitation method.Teaching proceduresTeaching aims and demands: Teach procedures Step 1 warming upShow some pictures of the famous scientists and ask the Ss to answer the following question:1.Do you know those scientists? (Ss say some scientists. Such as : Albert Einstein, Isaac Newton, Benjamin Franklin(1706-1790, Qian Xuesen , Liu Zhenxing , Hawking, Mendeleev)Ask the Ss some to introduce some scientists by his / her own word by the next question2.Can you remember their names and their scientific achievements?.Help the Ss to finish the introduction.Step 3. Pre-readingAsk the Ss the following Qs”3. What do you know about infectious diseases such as cholera ?4.Do you know how to prove a new idea in scientific research? (Ask the Ss to guess the correct orders of the steps on page) Step4. ScanningRead the passage quickly and put the correct stages into the reading about research into a disease.Find a problem: John Snow was a well-known doctor in Londonuntil its cause was found.Make up a question: He got interested in the two theoriesand soon the affected person was dead.Think of a method: He believed in the second theory butso severe that more than 500 people had died in 10 days.Collect results: He determined to find out why It seemed the water was to blame.Analyze the results: Next, John Snow looked into the source of the water for these two streetsthat cholera was spread by germs and not in a cloud of gas.Repeat if necessary: In addition, he foundthat polluted water carried the disease.Draw a conclusion: To prevent this from happening again, not to expose people to polluted water anymore.Step 5. Careful reading1.Ask the Ss to read the text carefully and then finish the chart in Ex. 1 on page 3.Scientific Report by John Snow The problem Nobody knew the cause of the serious disease of cholera. The cause Idea 1: strange cloud in the air that attacked victims.Idea 2: people absorbed the disease with their meals. The method Collect data from the next cholera attack to test theories. Try to prove which method was correct. The results He found the cause of cholera was the polluted water. Idea 1 or 2? Why? Idea 2. Because the data showed a connection with the water. The conclusion John Snow was able to defeat cholera once its cause was known.Step 6. Further Discussion1.Cholera was a 19th century disease. What disease do you think is simil