JHS2 Mathematics · Term 2, Week 12
Shapes and Space
Full lesson notes coming
Notes for this lesson are being prepared. The curriculum details below are complete and ready to use for your planning.
Curriculum details
- Strand
- Geometry and Measurement (Strand 3)
- Sub-strand
- Shapes and Space (3.1)
- Content standard
- B8.3.1.2 - Demonstrate the ability to perform geometric constructions of the angles (75˚, 105˚, 60˚, construct triangles and find locus of points under given conditions.
- Indicator
- B8.3.1.2.1 - Construct and bisect angles of 120˚, 105˚, 135˚ and 150˚
- 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, Common Core Programme (JHS1-JHS3), 2023, p. 125
Transcribed from the official NaCCA publication. Check this page against the source.
Exemplars (from the NaCCA curriculum)
E.g.1: Use a pair of compasses and a ruler to perform geometric construction of an angle (∠CBA) =120˚ [Draw a semi-circle over the point B to meet ⃒BC⃒ in Q and using the same radius and Q as centre to make the arcs R and P respectively) and
confirm the value using a protractor. E.g.2: Use a pair of compasses and a ruler to perform geometric construction of an angle of (∠SQC) 150˚ and measure with aprotractor to confirm.
E.g.3: Use a pair of compasses and a ruler to perform the geometric construction of an angle(∠AOE) 135˚ and measure with a protractor to confirm.
E.g.4: Use a pair of compasses and a ruler to perform geometric construction of an angle of 105˚ and measure with a protractor to verify.
