Number Operations · JHS2 Mathematics

Lesson notes

Learning Objectives

Indicator: B8.1.2.1.3 - Apply mental mathematics strategies to solve word problems.

By the end of the lesson, learners can:

Identify key information and the operation(s) required in a word problem without writing anything down.
Apply at least two mental strategies (breaking numbers apart, rounding and adjusting, working left to right, or using friendly numbers) to solve word problems involving addition, subtraction, multiplication, and division.
Explain their mental process step by step in their own words to a partner or the class.
Solve a multi-step word problem using mental strategies, checking their answer by estimating first.
Create and solve their own simple word problem based on a familiar Ghanaian setting, and state which mental strategy they used.

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Number Operations (1.2)
Content standard: B8.1.2.1 - Apply mental mathematics strategies and number properties used to solve problems
Indicator: B8.1.2.1.3 - Apply mental mathematics strategies to solve word problems.
Suggested placement: Term 1, Week 7 (Week 7 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, Common Core Programme (JHS1-JHS3), 2023, p. 94
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Play mental maths word games.
E.g.2. Play mental maths word games: - should provide opportunities for learners to use mental strategies, short methods and sundry tables to develop fluency in solving problems.