Depends on which apps do you use - there are also a lot of quizzes, puzzles, math and grammar exercises etc. But the problem is, what I also observed on my daughter, that when the exercises are printed on paper, she can just focus on them, since there isn't anything else on the paper. But when on iPad, there is always a lure to just close that educational app and switch to another entertainment one. The attention span is shorted and the focus is shallower, since there is always a temptation to be distracted by something else.