Children often need help learning arithmetic. This is a more serious problem today than in prior years. When many schools went to an online learning format the results were too often less than needed in proficiency in the foundations required to move on to the next grade. Arithmetic skills fell behind the needed levels.
There is a place for online learning, it is a great tool for motivated students. But not everyone is self-motivated. This is especially true when the subject is mathematics. It would benefit many students if their learning of the skills were to be augmented so as to catch up with the level needed, if not surpass that level.