Additive Thinking and Mental Strategies · Operations and Algebra
Regrouping and the Standard Algorithm
Understanding the mechanics of carrying and borrowing through concrete materials and symbolic notation.
Key Questions
- 1What actually happens to a ten when we regroup it into ten ones?
- 2Why do we start adding from the ones column rather than the hundreds?
- 3How can we prove our subtraction is correct using addition?
NCCA Curriculum Specifications
NCCA: Primary - NumberNCCA: Primary - Operations
Class/Year: 3rd Year
Subject: Mathematical Foundations and Real World Reasoning
Unit: Additive Thinking and Mental Strategies
Period: Operations and Algebra
Suggested Methodologies
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