The Explain phase requires the students to begin to articulate their understandings and highlight and describe patterns.
Explain also:
- Highlights and challenges the conceptions of students
- Involves students working in small groups to promote communication and language use
- Involves the teacher in probing, questioning and introducing terminology
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Hot Stuff
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Cool Stuff
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You Need
- Zip-lock bag
- 1/4 Teaspoon Yeast
- 100ml of 3% Hydrogen
Peroxide Solution
The Task
- In pairs, pour the hydrogen peroxide
into the zip-lock bag
- Close the bag and hold it against
your forehead, how does it feel?
- Re-open the bag and tip the yeast
into the bag, what do you notice?
- Close the bag and place it against
your forehead again, how does it feel?
- What has happened?
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You Need
- Zip-lock bag
- 1/2 cup of Water
- 1 Teaspoon Epsom Salts
The Task
- In pairs, pour the water into the zip-lock
bag
- Close the bag and hold it against
your forehead, how does it feel?
- Re-open the bag and tip the Epsom Salts
into the bag, what do you notice?
- Close the bag and place it against
your forehead again, how does it feel?
- What has happened?
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