Module5 A Lesson in a Lab教案
eg: 35%→ thirty-five percent (or: 35 percent); 50 percent equals a half.
then have the ss practice reading aloud the following percentages: 40%; 55%; 85%.
finally have the ss work in pairs to describe the fractions in activity 2 as percentages in english .
answers: 1. a quarter is the same as 25%; 2.one third is the same as 33.33r%(thirty-three point three three recurring percent); 3.four-fifths is the same as 80%; 4. one tenth is the same as 10%; 5. three-quarters is the same as 75%; 6. one half is the same as 50%; 7. two-thirds is the same as 66.66r%(sixty-six point six six recurring percent); 8. two-fifths is the same as 40%; 9. five-eighths is the same as 62.5%(sixty-two point five percent); 10. nine-tenths is the same as 90%; 11. three-eighths is the same as 37.5%(thirty-seven point five percent); 12.five-sixths is the same as 83.33r%(eighty-three point three three recurring percent).
homework:
1. preview the reading part.
2. work in pairs to finish activities 4& 5 on page 43 .
periods 2 & 3
reading & vocabulary
teaching aims and demands:
⒈ to learn about some vocabulary and knowledge related to science and experiments
⒉ to know about some metals and get to know their main uses in our lives
⒊ to make the students know how to do a simple experiment and write the report about it in english
⒋ to deal with all the activities1-6 about passage a and passage b on page 44-45
⒌ to develop students’ expression ability as well as reading ability by practicing these two passages
⒍ to raise students’ interests in science and form the rigorous scientific attitude.
teaching key points:
⒈ to make the students understand and grasp the vocabulary and knowledge related to science and experiments
⒉ to enable the students to know how to read some passages about simple scientific experiments
teaching difficulties:
to make students learn how to write an experiment report in english
teaching methods:
⒈ communicative approach
⒉ task-based approach
⒊ aural-oral approach with the help of the multi-media computer and the recorder
teaching aids:
multi-media computer; software; powerpoint; recorder
teaching procedures:
step 1: lead-in
at first show the students the picture of a lab with the help of computer