posted by:

Jim Vanides
on May 19, 2003
at 8:49PM

subject:

"What does it mean..."

The first mathematical issue I see is the question of what the "bottom number" really means. Towards the end of the video, the teacher asks if this means "4 in a group" or "4 equal groups".
I see another subtle math issue regarding what is meant by the horizontal line that separates the 3 from the 4. The girl up front said, "3 groups of 4". In thinking of where she could have come up with this, it occured to me that she is interpreting the LINE as the word "of", which could have been drawn from previous discussion (not shown) that the fraction reads "3 of 4". She could have misunderstood that this as "3 groups of 4" instead of "3 out of 4 groups". So the math meaning of the LINE becomes very important.
Of course, I don't teach math, so I'm VERY interested in what other people see in the video!
 Jim Vanides (jimvanides @ att.net)

