B5 Mathematics · Term 1 Week 9: Number Operations

Lesson notes

Learning Objectives

Indicator: B5.1.2.3.1 - Determine basic division fact up to 81

By the end of the lesson, learners can:

State division facts up to 81 (dividing by 1 through 9) and give the quotient correctly.
Apply divisibility tests for 2, 3, 4, 5, 6, and 9 to determine whether a number up to 81 is divisible by a given divisor.
Use a multiplication chart to find quotients by locating the dividend and reading the corresponding divisor and quotient.
Solve simple division word problems using basic division facts up to 81, showing working and the correct quotient.
Justify their answers by explaining how they used multiplication to check a division fact.

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Number Operations (1.2)
Content standard: B5.1.2.3 - Recall basic division fact up to 100
Indicator: B5.1.2.3.1 - Determine basic division fact up to 81
Suggested placement: Term 1, Week 9 (Week 9 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. 69
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Investigate numbers that are multiples of 3,4, 6, 8 and 9. How do you know a number is divisible by 3, 4, 6, 9? (This is also known as the divisibility test).
E.g. 2. Draw a 6 by 6 multiplication chart and use it as a game board to play the 3-in-a-line game with a pair of dice or playing cards. Players take turns in throwing a one dice and mark (or cover) a number that can be divided by the results (i.e. a quotient). The winner is the one who obtains three numbers in a line.

Figure from the b5 mathematics curriculum, printed page 69