Children are introduced to addition with two-digit numbers without regrouping in most first-grade textbooks. ... When word problems and situational problems accompany the presentation, children are less likely to ask, aquot;Do I have to regroup onanbsp;...
|Title||:||Mathematics Methods for the Elementary and Middle School|
|Author||:||Mary M. Hatfield, Gary G. Bitter|
|Publisher||:||Allyn & Bacon - 1993|