Very worth a visit to a parent-child science place. One morning is not enough time to play, because I have to go out for lunch, or just at McDonald's on the first floor, where the scenery is particularly good. After eating, go in and play to buy tickets again. If you don't have a nap habit, the time is better after lunch, and you can play all afternoon. It is best to prepare an extra set of children's clothes, and observe that the water experiment may get wet.