Nice. I'd try to avoid the puzzles with only two options, in (most?) of them it's obvious hat yu must pick the small object and drag it into the big one. Like
[chair] [room]
It make sense to move to chair into the room, bot not in the other direction.
Something easy like the number of images may be good enough for a first version. Are you randomizing the questions? Perhaps start with some easy examples with 1 object and 1 place, then 2 small objects and 1 place, then 2 small objects and 2 places, then 3 small objects and 2 places, ... Or something like that. (I remember a few other options like "cut the apple", that has no "places" so take my recomendation only as a rought idea.)
