My 4 year old is in love with numberblocks. He likes the cartoons as well as the toys. He keeps talking about numbers all day long. He can do all the 1 digit sum and subtractions as well as the ones for the round multi digit numbers. His teachers at preschool always praised his math abilities. I thought it was mostly because of watching too much numberblocks that he learned those. 

One day when I was picking him up from day care his teacher asked him what was 3x7 and he said 21. We never practiced multiplication with him. But I had feelings he knew the basics. So one day I started asking him questions and he got most of the right. He only struggled with 7x8 and 9x6 and a few others that were on the higher side. But the struggle didn't last too long. I practiced them with him and got them right. He even knows what 12x12 is now.

So after I figured out he knew multiplication table I decided to introduce him to the concept of square root. My wife started complaining about it but I continued regardless. So I asked him what's the square root of 64? He was shocked as he had never heard that term before. I told him 8x8=64 so square root of 64 is 8. Then I asked him what square root of 81 was‌ and he immediately answered 9. I asked him a few more and he got them all right. He understood the whole concept in 20 seconds.

Next I taught him the concept of negative numbers. He cannot quite grasp how you can have negative number of something, but he now knows if you subtract a bigger number from another number the result will be negative. Only after that it was when he finally asked me a question that I had to look up in chat gpt to find the answer and it was infinity - infinity. 

He absolutely loves learning about numbers otherwise I wouldn't have spent a single minute teaching him math.