Patterns and Relationships · B2 Mathematics

Lesson notes

Learning Objectives

Indicator: B2.2.1.1.1 - Demonstrate an understanding of increasing and decreasing number patterns

By the end of the lesson, learners can:

Identify the rule used to create an increasing or decreasing number pattern that changes by 2, 5, or 10.
Extend an increasing or decreasing number pattern by 2 or 3 more terms using the identified rule.
Detect errors or missing numbers in increasing and decreasing patterns and explain their reasoning.
Create their own increasing and decreasing patterns using jumps of 2, 5, or 10 and state the rule.
Justify their thinking when spotting mistakes in number patterns, using precise mathematical language like “add 2” or “subtract 5”.

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Curriculum details

Strand: Algebra (Strand 2)
Sub-strand: Patterns and Relationships (2.1)
Content standard: B2.2.1.1 - Recognize, create, extend, describe, and use patterns and rules to solve mathematical tasks
Indicator: B2.2.1.1.1 - Demonstrate an understanding of increasing and decreasing number patterns
Suggested placement: Term 2, Week 8 (Week 20 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. 32
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g.1. Identify the pattern rule used to create a pattern that increases or decreases by 2, 5 or 10. (i.e. in the pattern 2, 4, 6, 8 ,... - the rule is "add 2 or jump by 2) and extend the pattern for the next 2 or 3 terms.
E.g. 2. Identify errors or omissions in increasing or decreasing patterns (e.g. 5, 10, 20, 25, 30...) and explain the reasoning and strategy used to identify the pattern.