LESSON PLANNING OF TRIANGLES

 

LESSON PLANNING OF CONSTRUCTING OF TRIANGLES

Subject Mathematics

Grade 5^th

Students` Learning Outcomes

• Use protractor and straightedge ruler to construct a triangle when two angles and included side are given.
• Use protractor and straightedge ruler to construct acute-angled triangle, obtuse-angled triangle and right-angled triangles when one angle and adjacent sides are given.

Information for Teachers

• For example
• It helps if you draw a rough sketch of the triangle.
  

• Use a protractor to draw a line at 50⁰ to one end of the line. 

• Now do the same with 300 at the other end of the line.
  

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  Give question to solve
  Consult textbook at each level wherever required.

  Material / Resources 

Writing board, chalk / marker, duster, geometry box, textbook

Introduction

• Give them some time to recall drawing acute, obtuse and right angle.

• With the whole group share the steps with rough sketches as they did the same for complementary and supplementary angles. .

• Make sure that students have understood it.
  

 

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