what are you in biology? Watch
From experience, AQA B3 is teachable in a term, assuming 2.5hrs a week of teaching time and having to do another ISA at some point that term, it's a very small module!
In contrast, I'm teaching C3 at the moment, and am a topic and a half in already working on 2 hours a fortnight. That's a meatier module than B3 though in my eyes.