2D and 3D Shapes · B2 Mathematics

Lesson notes

Learning Objectives

Indicator: B2.3.1.1.2 - Identify the common features or attributes of a collection of 2D shapes (squares, triangles, rectangles, circles, pentagons, hexagons) of different dimensions or orientations

By the end of the lesson, learners can:

Name and identify squares, triangles, rectangles, circles, pentagons and hexagons of different sizes and turned in different directions.
Count and state the number of sides and angles (corners) of each 2D shape they see.
Sort a collection of 2D shapes using one or two features, such as number of sides or shape of corners, and explain the rule they used.
Identify and name real-life examples of these 2D shapes in the classroom, school compound and the local community.
Draw each of the six 2D shapes correctly and label them with their names.

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Curriculum details

Strand: Geometry and Measurement (Strand 3)
Sub-strand: 2D and 3D Shapes (3.1)
Content standard: B2.3.1.1 - Describe and analyse 2D shapes and 3D objects.
Indicator: B2.3.1.1.2 - Identify the common features or attributes of a collection of 2D shapes (squares, triangles, rectangles, circles, pentagons, hexagons) of different dimensions or orientations
Suggested placement: Term 2, Week 12 (Week 24 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. 33
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Recognize, draw and name 2D shapes having specific features or attributes (for example a given number of angles or edges/sides
E.g. 2. Sort a collection of 2D shapes by 1 or 2 features or attributes and explain the sorting rule used
E.g.3. Identify examples of these 2D shapes in the classroom and community. For example, take learners on a tour around the classroom and the school compound. Point out items to them and encourage them to name the 2D shape in the items