I say the teacher was right here.If he would've circled only the 1, or if the teacher had specified to circle the smallest number on each line, then he would've been right.
Once your getting this into it, at face value, as long as the lowest number is circled it is correct.(Although perhaps technically it should be the 0 )
His entire account is a gold mine. https://twitter.com/simoncholland
Which do you find this - funny, interesting, strange, or random?
A little of all. He meant to be funny.