Patterns and Relationships · B2 Mathematics

Lesson notes

Learning Objectives

Indicator: B2.2.1.1.2 - Identify, create and describe the rule for simple number patterns involving repeated addition or subtraction, skip counting and arrays of objects.

By the end of the lesson, learners can:

Identify the missing terms in a given number pattern involving repeated addition or subtraction.
Describe the rule for a simple number pattern using words such as “add 2”, “subtract 2” or “skip count by 5”.
Create their own number pattern of at least five terms and state the rule they used.
Recognise arrays of objects as number patterns and describe the row-by-row count.
Apply a given rule to extend a pattern by two or more terms, building on the increasing and decreasing patterns studied in Week 8.

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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: B2.2.1.1.2 - Identify, create and describe the rule for simple number patterns involving repeated addition or subtraction, skip counting and arrays of objects.
Suggested placement: Term 2, Week 9 (Week 21 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. Find the missing terms in the following:
- 9, 1, 3, 5, 9, 1, 3, 5, ___ ; ___
- 2, 4, 6, 8, 10, ___ ; ___,
- 5, 10, 15, 20___ , ___ ; or
- 54, 55, 56, 57, ___ , ___ .
E.g. 2. Identify and describe the rules for the following patterns
- 2, 4, 6, 8, 10, ... (the rule is "add two")
- 5, 10, 15, 20, ...
- 20, 18, 16, 14, ...