That is interesting. Thanks for the post, Zhian.

I'm hoping these incidences are few and far between.

We had another one where a workbook said that the equator doesn't go through Indonesia. I had to look that one up.
But that did not involve a teacher.

He thinks it is funny when I am wrong. He said to me "at least you can admit it" The confirmation does make a difference. And hoping he sees it is ok for him to make mistakes as well. That is a challenge.