Group items tagged

Great presentation by Nik Peachey

"Special programs are popping up in elementary schools to teach empathy as a means of stemming relational aggression, a psychological term to describe using the threat of removing friendship as a tactical weapon. Children also are being guided in ways to stand up for themselves, and to help others, in instances of social exclusion. Though both boys and girls exhibit relational aggression, it is thought to be more common among girls because they are generally more socially developed and verbal than boys."

We teach children about numbers, but how do people come to know what numbers are, given that they are abstract? There must be some process of learning that takes place. This paper explores this problem, offers several alternative accounts of what a number is, and argues that the concept of a number can be learned by learning to recognize the size of a set or collection of entities. Teachers call this subetizing