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MEP Jamaica: STRAND I
UNIT 32 Angles, Circles and Tangents: Lesson Plans
STRAND I: Geometry and Trigonometry
UNIT 32: Angles, Circles and Tangents
Lesson 32.2 Angles and Circles 1
CSEC Objective: angle geometry
Lessons Aims:
After this lesson, the student should be able to:
i)
understand and use angle geometry results for circles, chords,
diameters and tangents.
Prerequisite Knowledge: Angles and circles
Key Vocabulary:
chord, diameter, tangent
Challenges:
This builds on previous knowledge but will be a challenge for
some students as they need to be familiar with many
definitions and results.
Teaching Notes:
Refer back to students’ previous knowledge and use this as the
starting point for new results.
PowerPoints:
PP32.2
Lesson Plans:
Review homework
Introduction to the definitions
DS 32.3 or ST 32.2
Worked example
DS 32.4 or ST32.2, WE1
Exercises
ST 32.2, Q1 (some of)
Review answers
Worked example
DS 32.5 or ST 32.2, WE2 or WE3
Exercises
ST 32.2, Q3
Review answers
Closing activity
ST 32.2, Q4
Homework
ST 32.2, Q5 and Q6
Relevant CSEC Questions:
RT Q2, Q3, Q4
Glossary of Terms:
 CIMT and e-Learning Jamaica
A chord is a line joining any two points on the circle.
The perpendicular bisector is a second line that cuts a line in
half and is at right angles to it.
The perpendicular bisector of a chord is always a radius of the circle.
A tangent is a line that just touches a circle. It is always
perpendicular to the radius.