Posted by Mary on Monday, March 17, 2008 at 11:39pm.
How can children's concepts of partitioning need to be refined to produce a concept of fractional parts?

Math: Elementary  Writeacher, Tuesday, March 18, 2008 at 8:29am
Dividing up pizzas works.
(cut it into 8 parts or 6 parts or whatever)
So does dividing up money, especially based on a dollar.
(use ten dimes or four quarters or twenty nickles or one hundred pennies...) 
Math: Elementary  doris, Tuesday, November 29, 2011 at 9:32pm
why is it obvious that 3/4 x 8/5 = 6/5?