Measurement · JHS1 Mathematics

Lesson notes

Learning Objectives

Indicator: B7.3.2.3.1 - Describe the bearing of a point from another point

By the end of the lesson, learners can:

State the meaning of a true bearing as the angle measured clockwise from the North direction.
Measure the bearing of a point from another point using a protractor, writing the answer as a three-digit bearing (e.g. 060° rather than 60°).
Draw and label the bearing of a point from a given reference point when given the angle and distance.
Read and interpret bearings in everyday situations involving movement from one place to another.
Explain why bearings are always written with three digits and measured clockwise from North.

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Curriculum details

Strand: Geometry and Measurement (Strand 3)
Sub-strand: Measurement (3.2)
Content standard: B7.3.2.3 - Demonstrate understanding of bearings, vector and its components using real life cases.
Indicator: B7.3.2.3.1 - Describe the bearing of a point from another point
Suggested placement: Term 3, Week 4 (Week 28 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. 67
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g.1 use protractor to find the marked angles. For each diagram write the three-digit bearing.

Nearly square black-and-white mathematical teaching visual is organised as a table with horizontal divisions,... — A nearly square black-and-white mathematical teaching visual is organised as a table with horizontal divisions, vertical divisions. Visible labels, values, and notation include: Angle; Bearing; 7); N; N°; 5); Boaring; 8); 3); 6); ingle; 9).

E.g.2 Recognise true bearings as the angle measured in the clockwise direction from the North.
E.g.3 Express the following vectors graphically (i) ⃗ PQ =( -3 ) (ii) ⃗ BC =( 23 ) 4
and measure each angle.
E.g.4 Draw the following vectors (i) ⃗ AB =(3km,060) (ii) ⃗ QR =(5km,120) and measure each angle.

Wide colour mathematical teaching visual is organised as a table with horizontal divisions, vertical divisions,... — A wide colour mathematical teaching visual is organised as a table with horizontal divisions, vertical divisions, coloured regions. Visible labels, values, and notation include: The bearing of Afiba from Kweku is 060°; N; 63°; Kweku; Afiba; E; 063°; The bearing of Kweku from Yaw is 216°; *E; 216°; F.