Module 5 A Lesson in a Lab

natural  eg: wood, ------
man-made eg: glass, ------
either natural or man-made eg: water, ------
finally, ask the ss to open their books at page 41 and read the words in the box aloud. if possible, they can look up the words to know what they mean. of course, the above competition will continue, that is to say, at this moment, the teacher can ask the ss to put the words in the box on page 41 in their books in the above table.
step 2. vocabulary and speaking
activity 1
the aim of the activity is to have the students know how to read the long numbers. so the activity can be done like this:
before dealing with the activity, the teacher had better build up a long number by
having the students say an increasing sequence, eg:
3 three
33 thirty-three
333           three hundred and thirty-three
3, 333        three thousand, three hundred and thirty-three
33, 333       thirty-three thousand, three hundred and thirty-three
at this time, most of the ss will know the way of reading these long numbers: where to say “million”, “thousand”, and “hundred” . so in order to consolidate what they just learned, the teacher can practice saying the numbers at the top of page 42 with the students to make sure the ss have the correct intonation.
then ask the ss to go through the rest of the numbers in activity 1 and find the errors individually according to the directions.
finally the teacher calls back the answers from the class.
answers: 1)the word “thousand” is missing after “four hundred and seventy”;            2)the word “one”(or “a”) is missing before “hundred million”.     
activity 2
firstly, the teacher point at the fractions and say them in english. at the same time the teacher have the ss repeat them after him or her.
then the teacher and the ss make an analysis about the rules of reading fractions in english together.
finally the teacher ask the ss to read the rest of the fractions in activity 2 on page 42 in their books in english on their own. if necessary, the teacher can write down the correct answers on the blackboard to check what they read.
answers: 1. two-fifths;     2. five-eighths;     3. nine-tenths     4.three-eighths;      5.five-sixths.
 activity 3
the teacher should introduce the concept of percentage at first,  and then the teacher write down some percentages on the blackboard and read them out in english.