Those kind of mistakes irritate me. But I've learned some very gifted people are still very poor spellers. Take a deep breath and let it out slowly; then watch how things progress in her classroom.
I do admit that some mistakes by my elementary teachers have remained in my memory. I still remember a substitute 4th grade teacher trying to tell us 4 divided by 0 was 4. She didn't believe me that you can't divide by 0 until we went through 4/2 & 4/1, she was still a bit puzzled by the whole thing. So, I think it's a bigger problem when the kid starts finding the teacher's mistakes, and how it's handled then can make a difference in the child's attitude toward teachers & school.
