Activity 1: Warm-up · 5 minutes
Predicting the Chain Reaction
a) Aims
Ss activate background knowledge about ecosystems and predict the kind of information the listening will contain.
b) Content
T shows two pictures: a stream with plants along the bank, and the same stream with the bank bare and eroded. T asks: 'What may happen to the stream if the plants on the bank disappear?' Ss discuss with a partner and list two or three possible effects.
c) Expected outcomes
A list of 2–3 predictions on the board, for example: 'soil washes into the water', 'the bank collapses', 'fish and insects lose their habitat'. These predictions are kept on the board and checked at the end of the lesson.
d) Organisation
Teacher's activities
Students' activities
Teacher
Step 1: Task delivering
T shows the two pictures and asks: 'What may happen to the stream if the plants on the bank disappear?' T explains that today Ss will listen to a short announcement about ecosystems.
Students
Ss look at the pictures and listen to the question.
Teacher
Step 2: Task performance
T gives Ss 1 minute to talk with a partner and monitors quietly.
Students
Pairs discuss and note 2–3 possible effects in their notebooks.
Teacher
Step 3: Report and discussion
T invites 2–3 pairs to share and writes their ideas on the board. T asks: 'Is the recording about one effect or a number of effects?'
Students
Pairs report, e.g. 'The soil will be washed away into the river.' 'Fish will lose their home.' Ss answer: 'A number of effects.'
Teacher
Step 4: Conclusion and assessment
T says: 'Good predictions. Today we will check them against the recording. Remember: a prediction is not the same as a measured result.'
Students
Ss copy the key idea into their notebooks: predictions must be checked against the source.