约1470字。
Module 5 A lesson in a lab
Period 1
Teaching aims:
1. Let the students know some words related to experiments, the lab and something like that
2. Review the usage of numbers/ fractions/ percentages
3. Know sth about Degrees of parison.
Teaching steps:
I. All of us have learned physics, biology and istry in middle school. Now let’s have a test to see how much you know.
Deal with Activity 1 on page 41. Choose the correct answers to the quiz.
Now play the tape for the students to listen and check their answers.
Answers:
1 a 2 a 3 a 4 a 5 b 6 b 7 b
II. First read the words and then ask the ss to translate them into Chinese. At last put them in pairs or groups.
Answers:
air-gas-oxygen contract-expand earth- sun- moon
gas-liquid-solid
III.. Answer the questions.
Answers:
1) Electricity, iron, some metals and air are natural
2) Steel, some metals and glass are man-made
3) Electricity and some metals can be man-made and occur naturally
IV. Turn to page 42.
Activity 1 Read the numbers. Pay attention to the position of the word “and”.
V. Fractions.
基数词+序数词,当分子大于1时,分母要加s
作主语时,谓语动词要根据of 后面的名词决定。
Answers:
two-fifths five-eighths nine-tenths three-eighths five-sixths
VI. Percentages
基数词+ percent/ per cent 注意:percent 永远单数形式
作主语时,谓语动词要根据of 后面的名词决定。
VII. Degrees of parison 1 & 2
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