B2 Mathematics · Term 1, Week 12
Number Operations (Addition, Subtraction, Multiplication and Division)
Lesson notes
Learning Objectives
Indicator: B2.1.2.4.1 - Use conventional strategy to add and subtract within 100
By the end of the lesson, learners can:
- Model addition and subtraction of 1 and 2 digit numbers (with answers within 100) using groups of tens and ones.
- Use an addition frame to record the process of adding 1 and 2 digit numbers with and without regrouping.
- Use a subtraction frame to record the process of subtracting 1 and 2 digit numbers with and without regrouping.
- Solve addition and subtraction problems within 100 by writing numbers in the correct place value columns (tens and ones).
- Justify their answers by explaining how they regrouped tens and ones when necessary.
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Sign in with phone numberCurriculum details
- Strand
- Number (Strand 1)
- Sub-strand
- Number Operations (Addition, Subtraction, Multiplication and Division) (1.2)
- Content standard
- B2.1.2.4 - Develop and use conventional and personal strategies for computing additions up to 100
- Indicator
- B2.1.2.4.1 - Use conventional strategy to add and subtract within 100
- Suggested placement
-
Term 1, Week 12
(Week 12 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
- Curriculum reference
-
Mathematics Curriculum for Primary Schools (Basic 1-3), 2019, p. 27
Transcribed from the official NaCCA publication. Check this page against the source.
Exemplars (from the NaCCA curriculum)
E.g. 1. Use objects (groups of tens and ones) or drawings to model addition and subtraction of 1 and 2 digit numbers (with answers within 100), with and without regrouping) and record the process symbolically, using an addition or subtraction frame.
