Teaching syllabus for technical drawing
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| UNIT SPECIFIC OBJECTIVES CONTENT TEACHING AND LEARNING ACTIVITIES EVALUATION UNIT 9 PROPERTIES AND CONSTRUCTION OF TANGENTS The student will be able to 1.9.1 explain tangent. 1.9.2 explain the relationships among centres, normal and tangents. 1.9.3 construct tangents to a circle at a given point. 1.9.4 construct tangents to a circle from a given point outside the circle. 1.9.5 construct external and internal tangents to two equal and unequal circles. Tangent and its properties. Relationships among centre, normal and tangent. Construction of a tangent to a circle at a given point. Construction of tangents to a circle from a given point outside the circle. Construction of an external and internal tangents to two equal and unequal circles. Discuss the properties of tangent with students. Group students to discuss the relationships among centres, normals and tangents in groups. Illustrate the construction of tangents to a circle at a given point on the circle and assist students to practise. Illustrate the principles of constructing tangents to a circle from a point outside the circle and assist students to practise. Illustrate the principles involved in constructing external tangents to 1. two equal circles 2. two unequal circles Students to practise all the principles. Illustrate the principles involved in constructing internal tangents to 1. two equal circles 2. two unequal circles Students to practise all the principles. Students to list the properties of a tangent. Students to explain the relationships among centres, normal and tangent. Students to construct tangents at a point on a circle. Students to construct a tangent to a circle from a point outside the circle. Students to explain the principles for constructing external tangents to two equal and unequal circles. Students to explain the principles for constructing internal tangents to two equal and unequal circles. Students to construct an external and internal tangent to two equal circles and two unequal circles. Download 431.69 Kb. Share with your friends:
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