Teaching the elderly to classify garbage is only the simplest way, which means that if the garbage is classified incorrectly, they will be fined, and most elderly people will be nervous about it. At this time, if you talk about common mistakes in garbage classification, they will soon be impressed. The key is to make them aware of the improvement of national manufacturing level. Batteries that used to be made of hazardous waste can now be produced without mercury, so it is right to throw away other rubbish. Teach children to find early education toys to do garbage sorting, point to what they can do when they think of it in life, and it is not bad to ask questions at will.