Moving a millstone
I found a millstone in the river that runs past our house and wanted to move it into our garden but it's pretty heavy. It took quite a bit of thinking but in the end we have found a way to move it using...
Fish and chips
I saw this work of art while I was queueing up for fish and chips and thought I would take a video for the blog. The fish is illuminated by a light that changes colour. Different wavelengths are diffracted...
Results week
It's results week, so teachers and students will be finding out how IB Diploma Programme grades have gone. So far (as of 6th July), we are through the IB's staggered releases of results, which means that...
What's happening?
The question "What's happening?" used to be the prompt on Twitter when composing a new 'tweet'. Having checked this just now, I see Twitter has replaced it with "What is happening?!", perhaps in a bid...
Back seat
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Grass rainbow
I was walking through the garden in the morning and saw these coloured dew drops on the grass. I stopped to think about how they were formed. I should point out from the start that I am the wrong person...
Option choice
In most schools the teacher teaches one option. This is always disappointing for students who wanted to do one of the others. Well we (Emma and myself since we now teach the same students) teach them...
Linking questions
I thought I would have a go at making a presentation showing all of the linking questions in the new guide. There a quite a lot so would be a mess if I displayed all of them so I made this version using...
Non conceptual physics
There is a brilliant textbook called conceptual physics by Paul Hewitt but how can you teach non-conceptual physics? Here is an example: The current through a resistor of resistance 12 Ω connected to...
Chris comments on new subject guide
I have been teaching physics for 44 years and during that time I have taught many variations of IB physics after 10 years of the British A Level. I’ve only got a year and a half to go before I retire...