I'm trying to help the five-year-old write correctly. She has a bad habit of writing 2, 3, 7 and 9 backwards.
You know, I never learned the difference between open-top 4s and closed-top 4s. Is there an official difference, or is it just a matter of taste? Closed-top 4s look too much like 9s, which is why I never write them.
I also don't know the difference between the lower case a which is an o with a tail, and the lower case a with a line on top.