4.9 To recognise, visualise and name 3-dimensional figures

Mathematics

Geometry

Educator section

Memorandum

Learner section

Content

Activity: to recognise, visualise and name 3-dimensional figures [lo 3.1.1]

To investigate and compare 3-dimensional figures [lo 3.3.1]

1. The following nets are examples of pyramids.

Trace them exactly, cut them out and fold each pyramid.

2. Hold a class discussion and draw up a list of the similarities and differences that you notice between the two pyramids.

Assessment

Learning Outcome 3: The learner will be able to describe and represent characteristics and relationships between two-dimensional shapes and three-dimensional objects in a variety of orientations and positions.

Assessment Standard 3.1: We know this when the learner recognises, visualises and names two-dimensional shapes and three-dimensional objects in natural and cultural forms and geometric settings, including those previously dealt with and focusing on:

3.1.1: similarities and differences between tetrahedrons and other pyramids.

Assessment Standard 3.3: We know this when the learner investigates and compares (alone or as a member of a group or team) two-dimensional shapes and three-dimensional objects studied in this grade according to properties listed above by:

3.3.1: making three-dimensional models using:

• drinking straws to make a skeleton,
• nets provided by the teacher;