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Download full textWiles, Clyde A.; And Others – 1972
Two sequences of activities were developed to provide instruction on the algorithms for addition and subtraction of two-digit numbers. In the integrated sequence (I) the mechanics of "carrying" and "borrowing" were treated as a single process "regrouping." In the sequential treatment (S) the addition algorithm was developed before the subtraction…
Descriptors: Addition, Algorithms, Arithmetic, Curriculum
Wiles, Clyde A.; And Others – 1972
Two sequences of activities were developed to provide instruction on the algorithms for addition and subtraction of two-digit numbers. In the integrated sequence (I) the mechanics of "carrying" and "borrowing" were treated as a single process "regrouping." In the sequential treatment (S) the addition algorithm was developed before the subtraction…
Descriptors: Addition, Algorithms, Arithmetic, Curriculum
Foley, Jack L. – 1967
This booklet, one of a series, has been developed for the project, A Program for Mathematically Underdeveloped Pupils. A project team, including inservice teachers, is being used to write and develop the materials for this program. The materials developed in this booklet include (1) addition, subtraction, and multiplication in modulo seven…
Descriptors: Addition, Arithmetic, Curriculum, Curriculum Development
