B5 Mathematics · Term 1 Week 6: Counting, Representation & Cardinality

Lesson notes

Learning Objectives

Indicator: B5.1.1.3.3 - Identify even and odd numbers between 1 and 100 as numbers that can be arrayed in twos array and those which cannot

By the end of the lesson, learners can:

Arrange given quantities of objects (from 1 to 100) into pairs or twos arrays to determine whether a number is even or odd.
Identify even and odd numbers between 1 and 100 using the twos-array method and explain their reasoning.
Generate even numbers by skip counting in twos starting from 2, and odd numbers by skip counting in twos starting from 1.
Classify numbers from 1 to 100 as even or odd and justify their classification using the pairing rule (no leftovers vs. one leftover).
Apply the concept of even and odd numbers to solve simple real-life problems involving pairing and sharing.

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Counting, Representation & Cardinality (1.1)
Content standard: B5.1.1.3 - Demonstrate an understanding of factors, multiples of numbers including composite, even, odd and prime numbers from 1 to 100
Indicator: B5.1.1.3.3 - Identify even and odd numbers between 1 and 100 as number that can be arrayed in twos array and those which cannot
Suggested placement: Term 1, Week 6 (Week 6 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 4-6), 2019, p. 62
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1 Ask learners to use arrangements of twos arrays of objects to find even and odd numbers between 1 and 100

Figure from the b5 mathematics curriculum, printed page 62

E.g. 2 Ask learner to collect from the arrays, pairs to skip count in twos starting from 1 to generate odd numbers, and skip count in twos starting from 2 to generate even numbers