The scene: The boys were playing, well, more like wrestling while I was preparing their dinner. I overheard this conversation between them:
Calvin: Athan, what’s 10 + 10?
Athan: 20!
Calvin: Good, and what’s 10 + 11?
Athan: ummm….. I don’t know.
Calvin: It’s just one number after the answer you said just now.
Athan: 11?
Calvin: No, its 21.
Calvin: Ok, now try this: what is 10+12?
Athan: I dunno know.
Calvin: It’s just the number after the one that I just said.
Athan: 13?
Calvin: *getting a little impatient* No, its 22! OK, then what is 8+2?
Athan: 10!
Calvin: Finally!
I was silently smiling to myself throughout the conversation. I am not sure if Calvin realised that Athan can only add/subtract within 10 at this stage. 🙂 Love the idea that he is trying to teach his little brother!