Counting, Representation… · B6 Mathematics

Lesson notes

Learning Objectives

Indicator: B6.1.1.4.3 - Perform simple multiplication with integers

By the end of the lesson, learners can:

Multiply a positive integer by a negative integer using a number line, starting from zero and hopping to the left.
Multiply two negative integers and state the rule that a negative times a negative gives a positive product.
Multiply a negative integer by a positive integer and explain why the product is negative.
Apply the rules for multiplying integers (same signs give positive, different signs give negative) to solve simple multiplication problems accurately.
Solve word problems involving multiplication of integers in everyday situations and justify their answers.

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Counting, Representation, Cardinality & Ordinality (1.1)
Content standard: B6.1.1.4 - Demonstrate an understanding of integers
Indicator: B6.1.1.4.3 - Perform simple multiplication with integers
Suggested placement: Term 2, Week 2 (Week 14 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.
Source document note: The official curriculum document has a fault in this entry, so the curriculum text above is transcribed exactly as printed:

exemplars - p.130
Curriculum reference: Mathematics Curriculum for Primary Schools (Basic 4-6), 2019, p. 130
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Use number line to help learners to multiply integers; learners should always start from zero and skip/hop to the left or write on the number line. For instance, to multiply 3 by (-2), have learners start from zero and hop to the left 3times in an interval of 2.

Wide black-and-white mathematical teaching visual is organised as a table with horizontal divisions, vertical... — A wide black-and-white mathematical teaching visual is organised as a table with horizontal divisions, vertical divisions, open white space around the main marks. Visible labels, values, and notation include: 3 • (-2) means add; 2 three times.; 2; 7; 6; 5; 4; 1; 3 • (-2) = -6; +2; 3 • 2 means add; 3; 3 •2= 6.

 The indicator is printed B6.1.1.4.3 but the content standard cell beside it prints B6.1.2.6 CONT'D ("Demonstrate an understanding of integers"). The standard code here follows the indicator's own code; the text is the one printed in the cell. There is no B6.1.1.4.1 or B6.1.1.4.2.