I started my 4 year old grandson, Balin, on the Polar Express.
Then, had him learn to put cars on the track.
Very proud of himself.
Then, got him started on the AirWire.
I told him that in order to change direction, he needed to slow the engine down to a stop, then change direction, and then return to speed. He did well for about ten minutes, then excitedly told me, “Grandpa, did you know that you don’t have to slow down to go the other way???” :lol: