B2 Mathematics · Term 3, Week 3
Position/Transformation
Lesson notes
Learning Objectives
Indicator: B2.3.2.1.1 - Prove that the placement or direction of a shape or object does not change its length.
By the end of the lesson, learners can:
- Compare the lengths of objects placed in different positions and directions and state which is longest or shortest.
- Demonstrate through direct comparison (placing objects side by side) that objects of equal length remain equal regardless of how they are turned or placed.
- Prove, using words and actions, that turning a stick, pencil, or strip of paper does not make it longer or shorter.
- Justify their answer when asked whether a tilted or horizontal object is longer, giving a reason based on measurement rather than appearance.
- Work collaboratively in pairs to test and explain why the direction of an object does not affect its length.
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Sign in with phone numberCurriculum details
- Strand
- Geometry and Measurement (Strand 3)
- Sub-strand
- Position/Transformation (3.2)
- Content standard
- B2.3.2.1 - Demonstrate that the length of an object does not change with its placement or direction
- Indicator
- B2.3.2.1.1 - Prove that the placement or direction of a shape or object does not change its length.
- Suggested placement
-
Term 3, Week 3
(Week 27 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. 35
Transcribed from the official NaCCA publication. Check this page against the source.
Exemplars (from the NaCCA curriculum)
E.g. 1. Put sticks of equal length in different places and directions and ask learners to identify the longest; viz. which stick in the figure is longest?
Then ask them to pick the sticks and put them side by side to see if they have equal length.