Want to help your sixth-grader master math? Here are some of the skills your sixth-grader will be learning in the classroom. In a herd of horses, the ratio of legs to tails is 4 to 1 (or 4:1) because ...

Vol. 26, No. 2/3, Learning Mathematics: Constructivist and Interactionist Theories of Mathematical Development (Mar., 1994), pp. 135-164 (30 pages) Conventional treatments of functions start by ...