Counting, Representation… · B3 Mathematics

Lesson notes

Learning Objectives

Indicator: B3.1.1.1.1 - Use number names and the counting sequence to count and estimate quantities up to 10,000.

By the end of the lesson, learners can:

Skip count forwards and backwards by 10s, 50s, 100s, 500s, and 1000s from any starting point up to 10,000.
Identify and correct errors or omissions in a given skip counting sequence.
Count objects in a collection and select the most appropriate estimate from three given choices, justifying their selection.
Write numbers up to 1000 in standard form (numerals) when given number names, and write number words for multiples of ten up to 9990.

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Counting, Representation, Cardinality & Ordinality (1.1)
Content standard: B3.1.1.1 - Count and estimate quantities from 0 to 10,000
Indicator: B3.1.1.1.1 - Use number names and the counting sequence to count and estimate quantities up to 10,000.
Suggested placement: Term 1, Week 1 (Week 1 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. 42
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Skip count forwards and backwards from 0 to 10,000 by 10s, 50s 100s, 500s and 1000s starting at any point. Identify and correct errors or omissions in a skip counting sequence
E.g. 2. Count to tell the number of objects in given collection of objects by selecting the most appropriate of three estimates for a given collection of objects and justify the choice.
E.g. 3 Represent numbers or quantities to 1000 with written numerals
E.g. 4 Write number words for given multiples of ten to 9999 and for multiples of 100 to 99990