So what should children be able to do by age 12, or the time they leave elementary school? They should be able to read a chapter book, write a story and a compelling essay; know how to add, subtract, divide and multiply numbers; detect patterns in complex phenomena; use evidence to support an opinion; be part of a group of people who are not their family; and engage in an exchange of ideas in conversation. If all elementary school students mastered these abilities, they would be prepared to learn almost anything in high school and college.
Michael Walker on 02 Feb 10Key Point of the article here.