OK, this is yet another question about teaching physics. I'm a chemistry specialist, but I'm also familiar with many of the biology and physics topics in GCSE Science and Additional Science. I also teach all three sciences at KS3. Last year our physics specialist retired and I had to take over GCSE Physics. I taught year 11 separate physics this year and many of the topics were completely new to me (my highest qualification in physics in an O level taken many many years ago). But I like teaching physics - and would like to be a better physics teacher. I'm thinking about improving my physics knowledge/qualification by either doing physics A level OR the Open University Certificate in Physics course. So I'm looking for advice please from a physics specialist.