Module 2: Written feedback - PGCE
Module 2: Written feedback - PGCE
Module 2: Written feedback - PGCE
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Handout 4.2.3 cont.<br />
The teacher’s comments are transcribed below:<br />
Well done, Fiona – an excellent explanation about the diffusion of bromine and air. Look at your particle<br />
diagram for liquids – how do you think the diffusion would have been different if we had used two liquids?<br />
Why do you think diffusion does not happen in a solid?<br />
If you are unsure about either of these questions, come and see me and we can talk about it.<br />
Well done, Fiona – you really have a good idea about how the particles got more energy when we heated<br />
the can. But, why did this blow the lid off? Let’s see if you can fill in the gaps along the way … .<br />
What happened to the movement of the air particles as you heated the air?<br />
Why do faster moving particles put more force on the lid of the can?<br />
(There are two reasons. Can you get them both? – a credit if you can!)<br />
If you are unsure about these questions, come and see me and we can talk about it.<br />
(John F. Kennedy School, Hertfordshire)<br />
29 Unit 4, <strong>Module</strong> 2: <strong>Written</strong> <strong>feedback</strong> © Crown copyright 2004