Adventures in Pedagogy: Four Zero

Aidan was having trouble with subtracting numbers that required renaming renamingborrowing, umm, taking away more than you have. He was simply taking the bottom smaller digit from the larger regardless of which one was the subtrahend or minuend on top or bottom.

He picked up some sort of rule along the way and was obviously misusing it. So he decided to get a little creative.

Take a look.


- Posted using BlogPress from my iPhone