Module 5 A lesson in a lab
1. Revise the usage of Degrees of Comparison by translating some sentences.
2. Know more about the two experiments
I. Translate the following sentences into English.
The new building is three times the size of the old one.
The new building is three times larger than the old one.
The new building is three times as large as the old one.
Mr Sun speaks English as fluently as you.
The harder he works, the happier he feels.
The girl becomes more and more beautiful.
II. Come to the Reading and Vocabulary.
Ask the question: What are the stages of a scientific experiment?
They are as follows: aim—method---result—conclusion
Now read passage A and finish Activities 2 and 3.
The reaction of metals
1. potassium, calcium, and sodium
2. It burns to form an oxide
3. Magnesium, aluminum, and zinc
4. It has a slow reaction.
5. No, it doesn’t.
III. Prepare for the test.
Prepare some test tubes, some oil, test tube holder, cotton wool, iron nails, Bunsen burner. Describe the experiment to the students and ask the students to explain what will happen in the end.
Ask the students to read Passage B and try to fill in the table on page 45.
Iron in dry air iron in air-free water iron in ordinary water
Starting experiment cotton wool water water
1 week later nails water
Result Iron doesn’t rust Iron does not rust. Iron rusts.
Ask the students to read the text for some time and try to retell the experiment with the help of the table.
If there is time, check if some can.
Retell the experiment and report a similar experiment.
Module 5 A lesson in a lab
Enabling the students to
1. know how to read the decimals.
2. know sth about the science teaching in a senior high school.
I. Ask some students to read the following numbers:
II. Deal with Everyday English on page 48.
1a 2b 3a 4b 5a
III. Turn to page 49. Cultural Corner.
Look at this photo. This boy is Mark Kendon. Mark Kendon is a Canadian student at Senior High school. The passage is about his description of science teaching in his school. Now read the passage quickly and try to find the answers to the following question:
Why has Mark become more interested in science?
--Because he has moved to a new school with good facilities and teachers.
Read the passage again and try to get as much information as possible. Do the following questions.
Was Mark interested in science at first?
What happened to his feelings about science?
--His feelings about science have now changed.
How did he get interested in science?
---The science teachers at the new school are excellent, the science facilities are very good, with labs that have all the latest equipment. We are taken to interesting public science lectures about four times a term.
1. How do our teachers teach science subjects?
2. Is it a good idea to ask some scientists to give us lectures?
Revise the whole module and get the exercises in the WORKBOOK ready.