Unit 1 Necessity is the Mother of Invention

Lead In

1. Work with a partner. Think of the difference between the words ‘ discovery ’ and ‘ invention ’. Write down a definition for the both words.

2. Sort out the inventions and discoveries into two columns. Compare and discuss your lists with a partner.

e. g. X-rays e. g. telescope

3. Which areas of scientific study or technology do they belong to? Which of them are used in more than one natural science?

Reading

1. Work with a partner. Name any accidental discoveries

or inventions you have ever heard about. How did

people benefit from them? Did they cause any

problems?

2. The words in column A are in the text you are going

to read. Match them with the words in column B which are similar in meaning.

A	B
1) wire	a) mix
2) spark	b) silhouette
3) to jerk	c) to vaccinate
4) screen	d) flash
5) virulent	e) covered
6) prevention	f) display
7) compound	g) cable
8) coated	h) dangerous
9) to inoculate	i) avoidance
10) shadow	j) to move suddenly

3. Read the text about four unexpected scientific discoveries. How did they change the world?

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