英语教案－Senior 3 unit4 lesson15

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i in storage = while it is being stored

j damp = fairly wet. The atmosphere can be very damp during the rainy season and grain can start to go bad.

k one in ten = one person out of ten

l starve to death: a set expression = die because they do not have enough to eat

m Take the Aswan Dam for example = consider the example of the Aswan Dam

n west of the USA: particularly the desert land to the east of the high mountains

o corn crops: here, corn means maize. p low-lying areas: Many of these areas are below sea-level.

Step 4 Reading aloud

Speech Cassette Lesson 14. Play the tape of the passage for the Ss to listen and follow. Play the tape of part of the passage once more; this time the Ss listen and repeat. Pay attention to stress and intona­tion, also the sentence stress of the longer sentences.

Step 5 Note making

SB Page 21, Part 3. Get Ss to do this exercise individually, so that every S has to make an effort to re-read the text and extract the relevant information. If it is done in class, get Ss to check their notes afterwards in pairs. Alternatively, if you wish, you can set this exercise for homework. In that case, get Ss to check their notes in pairs at the beginning of the next lesson.

Notes:

FACTS

1 First record of agriculture (date/place): 10,000 years ago, in Egypt, the Middle East and India.

2 Present world population: almost 6 billion

3 Farming population: 1 billion

4 66% of the world’s surface is sea.

5 11 % of the land surface can be used for

growing crops. REASONS FOR LOSS OF FARMLAND

1 It is being built on;

2 It is being lost by the actions of the wind and the rain;

3 Land is becoming too salty.

WAYS OF INCREASING FOOD PRODUCTION

1 You can increase the area by irrigation; you can build dams and water your fields; you can pump water from low-lying areas;

2 You can develop new plants which produce heavier crops;

3 You can develop new plants which grow in poor soil;

4 You can develop new plants that are less likely to be attacked by pests and diseases.

Step 6 Reference

SB Page 21, Part 4. Read the instruction and check that the Ss know what to do. Do the first two items orally with the whole class. Then let the Ss work through this exercise in pairs. Check the answers at the end. Answers:

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英语教案－Senior 3 unit4 lesson15