2D & 3D Shapes

Curriculum details

Strand

Geometry and Measurement (Strand 3)

Sub-strand

2D & 3D Shapes (3.1)

Content standard

B3.3.1.1 - Analyse the relationships among and between 2-D shapes and 3-D objects according to a variety of attributes, including measurement

Indicator

B3.3.1.1.1 - Describe 3D objects according to the shape of the faces, the number of edges and vertices. Sort regular and irregular polygons including triangles, quadrilaterals, pentagons, heptagons according to the number of sides

Suggested placement

Term 2, Week 11 (Week 23 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. 64

Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Identify a variety of 3D shapes (cubes, spheres, cones, cylinders, pyramids and prisms) by:
- identifying and counting the faces, edges and vertices:
- describing the shape of the faces
- constructing a skeleton of an object and describing the relationship between the skeleton and the object
E.g. 2. Sort a collection of 3D objects according to the number/nature of faces, number of edges or number of vertices and describe sorting rule used
E.g. 3. Identify regular and irregular 2D shapes (triangles, rhombus, rectangles, squares, pentagons, hexagons, octagons) having different dimensions and orientations by the number and nature of sides