"It says 'received,' so it must be addition." What I changed after realizing I was teaching students to use keywords for equations, even though they could calculate …

I was grading math tests in the classroom after school in December.It was the end of the second term of second grade, a unit ...

A first grader who loves addition too much. For subtraction, set a limit and do it little by little.

When a child who has become fast at addition moves on to subtraction, they feel like they are returning to being the slow ...