Homework ideas ◆ ◆ ◆
Coursebook questions 3.4 to 3.15 End-of-chapter questions 1, 2 and 3 Workbook exercise 3.2 How plants take up water ◆ Workbook exercise 3.3 Osmosis and potatoes ◆ Worksheet 3.1 Drying mangoes
Topic 3 Active transport Coursebook section 3.3 Teaching ideas ◆
Discuss the ideas on page 35 in the Coursebook. Build up the formal definition with the class. ◆ Ask students to do Workbook exercise 3.4 Diffusion and active transport. It may be useful for them to work in groups, so they can discuss their ideas within the group. When all have finished, ask one person in a group to tell you their suggested answers to a question, gradually working your way through all of them. Common misunderstandings and misconceptions ◆
More able students will be able to understand this concept, but it does require the ability to visualise very small particles, and to appreciate how energy is required to move particles against their concentration gradient.
Homework ideas ◆ ◆ ◆
End-of-chapter question 5 Workbook exercise 3.4 Diffusion and active transport Worksheet 3.2 Diffusion, osmosis and active transport
Original material © Cambridge University Press 2014 © Cambridge University Press 2014
IGCSE Biology
Chapter 3: Teaching ideas
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