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Before the break I spent the morning with the Form III physics students at Moshi SS.  Sabrina (teacher from Germany) helped out.  We did some optics activities, namely finding the focal length of a mirror and then discovering the concept of refraction.

The focal length exercise particularly is a difficult one to grasp.  My students in Canada find it tricky as well.  It is pretty important that students try to do it because they think they know but they often miss the important point about incoming rays being parallel to each other.  It was a good day and I met a new physics teacher who hadn’t been to the workshops before.  Sorry and sadly I seem to have lost the pictures from this event.

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