Unborn bubbles
It's not strictly a bubble it's a vertical soap film, an unborn bubble if you like. I had just finished putting together the subject guide page on thin film interference and was puzzling over the coloured...
Latest developments
After more than 10 years of continual development this website is now huge. Over 1000 multiple choice questions, hundreds of tests and problems, unit planners for ever unit, 760 blog posts, activities...
M20 subject report
In normal examination sessions, the Physics subject report is a treasure trove of advice for teachers and candidates: grade boundaries for each component, discussions about solutions to tricky multiple...
10 ideas for investigations with a balloon
Apparatus: A ruler, a computer, some string, cardboard a length of transparent tubing and some balloons. 1. The classic falling ball experiment with a balloon. What is the relationship between fall time...
EE first draft
Last Sunday was the deadline for the EE first draft, I am supervising 4 extended essays and got 4 first drafts, so far so good. As usual there is some interesting work being done as the students get to...
Light gate heavy fence
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M20 and M21 news
It's become a case of 'blink and you'll miss it' over the last couple of weeks with IB Physics! M20 Regraded The IB has announced a significant change to M20 grades. For candidates where the IA grade...
Database of databases...
...or at least a spreadsheet of databases! At our Coffee with Chris & Emma events and on the My IB forum, there are often questions about use of databases for the investigation (not least now that a...
Should I study physics?
That's a good question, a bit late for me because I already did but well-timed for students choosing their IB subjects. It's not about what you know but about the way you think - some of my best students...
Preparing your online course
I don't know about you but my holiday ends in two weeks, before then I will manage a weekend surfing in Norway but apart from that I'll be at home preparing new resources for the website and doing some...