“I learnt that in teaching young children the concept of number, you should start with the concrete, then move to the pictorial, before finally representing numbers in the abstract. I learnt that children should be encouraged to articulate their processes, and feed back to each other on whether they are right or wrong, and why. And I learnt that this is so children understand number concepts, not just procedures, because (though not only because) the PSLE tests understanding, not just memorisation. As I was chatting to the professor in the car as she gave me a lift to the station, she also expounded on the importance of teacher-student relationships – 'you can't touch their brain until you have touched their heart'.”