Activity 1: Warm-up · 5 minutes
Thinking about natural wonders
a) Aims
Ss activate prior knowledge about natural wonders and recall why people should protect them, so that they are ready to read for evidence.
b) Content
Ss look at the board and answer two questions: 'Have you ever visited a natural wonder? What did you see there?' and 'What rules should visitors follow to protect it?' Ss work in pairs and then share one answer with the class.
c) Expected outcomes
Each pair names one natural wonder (for example, Ha Long Bay or a local cave) and at least one visitor rule, such as 'Don't throw rubbish' or 'Stay on the path'. These ideas lead into the topic of preservation.
d) Organisation
Teacher's activities
Students' activities
Teacher
Step 1: Task delivering
T shows the picture of a limestone cave on the board and asks: 'Have you ever visited a natural wonder? What rules should visitors follow there?' T writes the key word 'natural wonder' on the board.
Students
Ss listen and look at the picture. They think about the questions for about 30 seconds.
Teacher
Step 2: Task performance
T asks Ss to discuss in pairs for two minutes and monitors the pairs.
Students
Ss discuss in pairs. Expected answers: 'I visited Ha Long Bay. We should not throw rubbish in the sea.' / 'We must stay on the marked path.'
Teacher
Step 3: Report and discussion
T invites two or three pairs to share their answers and writes the rules on the board.
Students
Representative pairs report their answers to the class. Other Ss listen and add ideas.
Teacher
Step 4: Conclusion and assessment
T praises the good ideas and says: 'Today we will read about a limestone valley and find out why visitors must protect it.' T writes the lesson title on the board.
Students
Ss copy the lesson title into their notebooks.