Discussion: Keynote Part 1

 previous post    next post
 main index
posted by: Judith Fonzi on May 13, 2003 at 4:31PM
subject: What if the - isn't a minus sign ?
What if the student wasn't using the - as a minus sign at all ? What if
it simply represented a notation for the intermediate result of
- 7
125 and then the student subrtacted the 50 (in her head) and recorded
the final result as 75.
 previous post    next post
© TERC 2003, all rights reserved