Lesson 1: Introduction to Circle Concepts
Bridge (5 min) | · Show students a CD and have them point out the center, radius, diameter, etc on them Ø Explain how a CD runs from one track to another by rotating around the center |
Learning Objectives | · To learn about the terminology relating to circles including: Ø Center Ø Radius Ø Diameter Ø Chord Ø Minor/Major arc Ø Sector Ø segment |
Teaching Objectives | · To have students understand how these terms are related and real life examples of where they’re used · To have students gain an appreciation for why circle concepts are important in real life |
Pre-Test (5 min) | · Review of terms students have learnt about in previous math courses (ie, radius and diameter) · Have diagram of circle on board and have students volunteer to come up and identify on the circle where is the center, radius and diameter Ø Have students identify these parts on a dartboard |
Participatory Learning (40 min) | · Lesson notes on new terminology of chord, minor/major arc, sector and segment (10 min) · Relate new terminology to radius, diameter and circumference (10 min) Ø Add illustration of new terms onto diagram of circle on board (different colour for each term) · Have students work on exercise problems relating to material covered in lesson notes (20 min) Ø Teacher will walk around class to monitor students’ progress |
Post-Test (10 min) | · Go over the solutions to the exercise problems as a class with students volunteering their answers |
Summary (5 min) | · Think-Pair-Share Ø Have students turn to a partner and tell them one thing they learnt in class today Ø Have students volunteer to share their partner’s answers with the class to summarize the material covered in the day’s lesson |
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