I sometimes let my four year old daughter use an original iPad Mini that we have laying around that I loaded up with some educational apps. I don't think she has learned much from it except that every time she's done using the iPad she throws a huge fit. She doesn't do this with any other toy and is generally a good listener. These devices are addictive and I'm really hesitant to buy her or let her use any iPads for school. Maybe someday I will buy her a MacBook Pro 13" so she can get an advantage over her peers using only iPad, lol.