Wednesday, August 01,
2001
Source: NCTM, The Mathematics
Teacher, V. 92, No. 6 (Sept. 1999),
pp. 492-95
Slide No.
10
Arithmetic Solution (Incomplete)
•
Teacher: By how much do the two
numbers differ?
•
Student:
•
Teacher: Why?
•
Student:
•
(continued)