Fractions · B3 Mathematics

Lesson notes

Learning Objectives

Indicator: B3.1.3.1.2

By the end of the lesson, learners can:

Explain that a fraction can name a part of a group of objects, such as 1 out of 4 oranges being one-quarter of the group.
Read and write fractions in symbols (e.g. 1/2, 2/3, 3/5) and in words (one-half, two-thirds, three-fifths).
Demonstrate fractions on a number line by locating points between 0 and 1 or between 0 and 2 for fractions like 1/2, 1/3, 1/4, 2/4, 3/4.
Match a fraction in symbols to a picture showing a part of a group, and vice versa.
Use a number line to find missing fractions when some fractions are already marked.

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Fractions (1.3)
Content standard: B3.1.3.1 - Develop an understanding of fractions using concrete and pictorial representations and write fractions in words and symbols
Indicator: B3.1.3.1.2 - Understand, explain and demonstrate that fractions can be used to represent parts of a group of objects, point on a line, or distances on a number line [Read and write fractions using words and symbols. (E.g. one-half, two halves, thirds, fifths etc.)]
Suggested placement: Term 2, Week 7 (Week 19 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.59
Curriculum reference: Mathematics Curriculum for Primary Schools (Basic 1-3), 2019, p. 58
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

Apples and ducks: fractions of a group of objects. The wide colour table is arranged with horizontal divisions,... — Apples and ducks: fractions of a group of objects. The wide colour table is arranged with horizontal divisions, vertical divisions, coloured regions.

E.g. 1. Use concrete objects and pictorial representations to explain the fraction half as the quantity obtained by taking 1 part when a group of object is partitioned into two equal parts.
E.g. 2. Ask learners to colour given fractions of given groups of object or match fractions to given groups of objects

"Circle 1/2, 1/4, 3/4" of groups of balls, stars, beads. The wide colour table is arranged with horizontal... — "Circle 1/2, 1/4, 3/4" of groups of balls, stars, beads. The wide colour table is arranged with horizontal divisions, vertical divisions, coloured regions.

E.g. 3. Ask learners to cut given fractions from a given (e.g. 12cm long) card, bar or stick.

Four 12cm bars marked 1/4, 2/3, 1/6, 3/4. The wide black-and-white table is arranged with horizontal divisions,... — Four 12cm bars marked 1/4, 2/3, 1/6, 3/4. The wide black-and-white table is arranged with horizontal divisions, vertical divisions.

E.g. 6. Ask learners to locate the missing fractions on the number line.

Number line 0 to 1 with a missing fraction at A. The wide colour table is arranged with horizontal divisions,... — Number line 0 to 1 with a missing fraction at A. The wide colour table is arranged with horizontal divisions, vertical divisions, coloured regions.

 The document numbers this indicator's exemplars 1, 2, 3 then 6; there is no E.g. 4 or E.g. 5.