B1 Mathematics · Term 1 Week 6: Number: Counting, Representation, Cardinality & Ordinality

Lesson notes

Learning Objectives

Indicator: B1.1.1.1.6 - Describe the relationship between quantities/numbers up to 100

By the end of the lesson, learners can:

Compare two groups of up to 20 objects using one-to-one correspondence and state which group has more, fewer, or the same number
Build a new group that has more than, less than, or the same number of objects as a given set
Order groups of 1 to 20 objects and sets of numerals between 1 and 20 from smallest to largest, and explain the order
Describe the relative size of numbers up to 100 using phrases like “a lot bigger,” “a little smaller,” or “5 more than”
Solve simple word problems that require comparing two quantities and explaining the relationship

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Number: Counting, Representation, Cardinality & Ordinality (1.1)
Content standard: B1.1.1.1 - Describe numbers and the relationship between numbers 0 to 100
Indicator: B1.1.1.1.6 - Describe the relationship between quantities/numbers up to 100
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 1-3), 2019, p. 5
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Use one-to-one correspondence, matching or counting to identify whether the number of objects in one group of up to 20 objects is greater than, less than or equal to the number of objects in another; describe the relationship between the two groups or numerals using the terms greater than, less than, or equal to
E.g. 2. Build a group that has more than, less than, or the same number as a given set
E.g. 3. Demonstrate an understanding of the relative size of numbers up to 100 by:
- Order groups of 1 to 20 objects and then a small set of numerals between 1 and 20, and justifying the arrangement
- Describe the relative size of numbers up to 100 (i.e., say whether one number is a lot or a little bigger or smaller than another, or 5 more than another number);
- Place given numerals between 0 and 50 on a number line that has 0, 5 10 and 20 indicated as benchmarks
- Act out and solving problems (pictures and words) that involve comparing quantities (i.e., Johnson has 3 mangoes, Adwoa has 7. what can you say?)