Week:20 Preparing date:27/12/2010
Period: optional lesson Teaching date:31/12/2010
OPTIONAL LESSON
UNIT 9. READING
• AIMS:
After the lesson, the Ss will be able to:
- understand more about whales.
- Read for specific information.
- Improve sub- skills: writing, listening, speaking.
• TEAHING AIDS:
Blackboard, handouts.
• PROCEDURE:
I. STABILIZATION:
Greet the class and check students’ attendance.
II. CHECK- UP:
No.
III. NEW LESSON:
Teacher’s activities Students’ activities
1. WARM- UP:
Play the game
Find out the key word.
- Divide class into 2 groups to play the
game.
- Which group that has the right answer
more quickly will be the winner.
- Listen to the teacher.
- Play the game.
Suggested answers:
1. world
2. challenges
3. marine

- Work in pairs.
- Ask and answer the
questions.
- Give comment.
Suggested answers:
1. Yes, they do.
2. To make sure the whale
breathes and alerts the
whale to any danger in its
environment
3. It means that we breathe
without thinking about it.
4. B
5. One interesting finding is
that whales do not appear
to have rapid eye
movement sleep.
Quite unlike us, whales "sleep" by resting
one half of their brain at a time. While one
half of the brain stays awake to make sure the
whale breathes and alerts the whale to any
danger in its environment, the other half of
the brain sleeps.
We humans are involuntary breathers,
meaning we breathe without thinking about
it. Whale’s sleep is complex and still being
studied. One interesting finding is that whales
do not appear to have rapid eye movement
sleep that is characteristic of humans. This is
the stage in which most of our dreaming