Same here, annobel. I didn't 'get' how logs worked until after I'd left school, and I wasn't even bad at maths! How easy it would have been to become disheartened about my maths ability. I empathise with kids (yes, kids as young as six and seven) who have already decided they're "rubbish at maths". It is a great shame.
Nowadays, quite rightly I think, more emphasis is given to encouraging mathematical thinking rather than just teaching kids arithmetic algorithms. Next step should be to keep reminding kids that professional mathematicians get their sums wrong all the time, but because they can think mathematically, they can usually see that something is wrong and keep at it.
Pure maths is art of the highest order 
cheerleader, hat off to your dad!