CPD for teachers: why do we need to unlearn, re-learn, keep learning?

CPD for teachers why do we need to unlearn relearn keep learningTry this thought experiment: you are in your class with your students, writing on your board (or typing on your screen projected on your board), the rules for ‘less’ and ‘fewer’. You give nice, solid examples, you feel proud of yourself, you test your students on this point, they do well, everything is settled. Then let’s say your students travel to the...