Unit : Science and Technology Topic : Impacts M.4

1. Unit: Science and Technology
Topic: Impacts
Mathayomsuksa 4

3. Vocabulary

4. genetically modified
Ex. Many Americans eat genetically modified
beef.
(adj.)
GM

5. diversity
(n.)
Ex. There is no
diversity
in the plant life of
particular area and
ecosystem.

6. pesticide
Ex. The crops don’t need a lot of
pesticides, fertilizers and water to grow.
(n.)

7. Structure

8. Participle Phrase
A participle phrase will begin with present
or past participle
as adjectives, adding description to the
sentence
Function

9. Past participle phrase
A regular past participle will end in a consistent - ed
These crops grown with GM technology
stay fresh for a long time.
Americans drink fruit juice made from genetically
modified fruit.
modifies
modifies

10. Present participle phrase
If the participle is present, it will dependably end in - ing
This process produces new varieties of organisms resisting deceases.
modifies

11. Punctuate a participle phrase correctly
When a participle phrase introduces a main clause,
separate the two sentence components with a comma.
Participle phrase + , Main Clause+comma

12. Knowing that GM crops often contaminate others
crops, the scientists still develop GM technology.
Example
Participle phrase
Main clause

13. When a participle phrase concludes a main clause and
is describing the word right in front of it
you need no punctuation to connect the two
sentence parts
Main Clause + no comma + Participle phrase

14. This process produces new varieties of
organisms resisting deceases.
Example
main clause
participle phrase

15. Text 3
GM technology
In some countries, like the USA, people already eat
a lot of GM food. At breakfast, the milk on their cornflakes
probably comes from a genetically modified cow, and the
cereal in those corn flakes probably comes from
genetically modified corn.
At lunch, many Americans eat genetically modified
beef, chicken or ham on their sandwiches, or in their
salad, every day and drink fruit juice made from
genetically modified fruit.

16. Activity

17. 1. Get in pair.
2. Read the text about GM technology.
3. Summary the pros and cons of the technology.
4. Write a list in the two columns.
Directions:
While-writing
Reading grid

18. For GM technology Against GM technology
While-writing
Reading grid

19. Post-writing
Structured paragraphs

20. Directions:
1. Read text 3 GM technology again.
2. Write your own paragraphs in the topic “GM technology in your life”
by using the participle phrase you have studied.

21. Introduction (Paragraph 1) Main body (Paragraph 2) Conclusion (Paragraph 3)
the paragraph that begins
with very general information
about the GM technology that
you have known
 What is GM technology?
.
the paragraph that tells
your experiences about
GM technology.
 What are GM
products or food that
you know?
 Do you use or eat
them in your life?
 Do you think they are
safe for the livings
and environment?
the paragraph that
summarizes the main
point of the body and
your opinion.
 Are you for or
against GM
technology?
Guideline: Paragraph structures

22. Topic__________________________
Introduction_______________________
________________________________________
________________________________________
________________________________________
______________________________________
Body____________________________
________________________________________
________________________________________
________________________________________
______________________________________
Conclusion________________________
________________________________________
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