Fractions · B4 Mathematics

Lesson notes

Learning Objectives

Indicator: B4.1.3.1.2 - Recognise and name equivalent fractions using pictorial representations and number line to determine the Lowest Common Denominator (LCD).

By the end of the lesson, learners can:

Identify equivalent fractions from pictorial representations such as fraction charts and shaded diagrams.
Name at least three equivalent fractions for a given fraction (e.g., name 2/4, 3/6, and 4/8 as equivalent to 1/2).
Locate and mark equivalent fractions on a number line from 0 to 1.
Determine the Lowest Common Denominator (LCD) of two given fractions by listing multiples.
Use the LCD to write equivalent fractions for two given fractions so they share the same denominator.

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Fractions (1.3)
Content standard: B4.1.3.1 - Develop an understanding of equivalent and improper fractions
Indicator: B4.1.3.1.2 - Recognise and name equivalent fractions using pictorial representations and number line to determine the Lowest Common Denominator (LCD).
Suggested placement: Term 2, Week 1 (Week 13 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. 20
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Use fraction chart to illustrate the concept of equivalent fractions (i.e. equal fractions that have different fractional units or denominators) i.e. one-half is 2-fourths, 3-sixth or 4-eighths.
E.g. 2. Illustrate the relationship between fractions and their equivalences by observing the different fractional units or denominators (i.e. the numerator is multiplied by the number of units the denominator is further broken into)

Nearly square colour mathematical teaching visual is organised as a table with horizontal divisions, vertical... — A nearly square colour mathematical teaching visual is organised as a table with horizontal divisions, vertical divisions, coloured regions. Visible labels, values, and notation include: 7|0; =.

E.g. 3. Ask pupils to colour fractions that are equivalent to given fractions or write more equivalent fractions for give n fractions

Wide black-and-white mathematical teaching visual is organised as a worked calculation with vertical divisions.... — A wide black-and-white mathematical teaching visual is organised as a worked calculation with vertical divisions. Visible labels, values, and notation include: 6; 3; =; 8; 2; 12.

E.g. 4. To determine the equivalent fractions of given fractions, find the Lowest Common Denominator (LCD) and use this to express the equivalent fractions that are comparable