Teaching High School Mathematics
Three error’s from my first Calculus assessment.
Multiple students did this to my surprise and showed canceling the 2 in the numerator with the x in the denominator. (Look at the pic above.) Usually I can see the mistakes that are going to happen, but this was a new one for me.
3. This one is my favorite. Talk about a coincidence.
Yes they cancelled the ‘s.
I still can’t believe it. I can’t plug in infinity, so how about zero?