Measurement- Length, Capacity… · B2 Mathematics

Lesson notes

Learning Objectives

Indicator: B2.3.3.2.1 - Recognize the need for standard unit of measurement of length

By the end of the lesson, learners can:

Measure the height of an object or person using hand spans and compare the different results obtained by different learners
Explain why measurements taken with body parts (hand spans, footsteps, arm lengths) can give different answers for the same object
State why standard units like the metre and centimetre are needed for measuring length
Estimate the length or height of an object in hand spans or footsteps, then measure the actual length and compare the estimate with the actual measure
Work with a partner to measure a given object and discuss why their results may differ, using the words “non-standard” and “standard” correctly

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Curriculum details

Strand: Geometry and Measurement (Strand 3)
Sub-strand: Measurement- Length, Capacity, Mass and Time (3.3)
Content standard: B2.3.3.2 - Use standard units to measure lengths, heights, mass and distance around objects.
Indicator: B2.3.3.2.1 - Recognize the need for standard unit of measurement of length
Suggested placement: Term 3, Week 6 (Week 30 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 1-3), 2019, p. 38
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Mark a learner's height on the wall and ask 4 learners to use their hands pan to measure the height. On the basis of the different measures that would be obtained, get learners to establish the need for use of standard units
E.g. 2. Estimate the measure in non-standard units, and then comparing the estimate with the actual measure. E.g. Bring two learners of different heights to the front of the class, take the height of one pupil. On the basis of that height ask a pupil to estimate the height of the other pupil and then measure the actual height to compare with their estimation