Idris stunned me yesterday by easily building this huge tower!! He confidently placed one unit block on top of another, using his other hand to steady the tower when needed. I helped with a few balance adjustments as it got higher but he wasn't upset when it fell over, he laughed and rolled around on the blocks then built another. I digress....... about halfway up, I handed him a longer block and he put it on and turned for the next one - I handed him the original size and he turned to put it on........ then stopped, frowned, said 'na' and took the long one off, dropped it on the floor, did a happy wiggle then put the same sized one on top and turned for the next. It made me think back to some Penny Tassoni training I did recently where she had put a blue duck with yellow ones and noted that a toddler took it out of the bucket, showing that toddlers take notice of groupings - an early mathematical observation. It got me thinking what else I have seen Idris do that comes under the 'early maths' heading.