Journal of the Mathematics Council of the Alberta Teachers’ Association
Volume 33 Issue 1, December 1995
41 – 42
Exploring Products Through Counting Digits, Part 2: Factors with an Unequal Number of Digits
W. George Cathcart
Number sense is a kind of intuitive idea about how numbers behave. Among other things, children with good number sense “recognize the relative magnitudes of numbers” and they “know the relative effect of operating on numbers” (NCTM 1989, 38). These “intuitions” enable students to make realistic estimates of computational results.
