LESSON PLAN OF CONSTRUCTING OF TRIANGLES

 

LESSON PLANNING OF CONSTRUCTING OF TRIANGLES

Subject Mathematics

Grade 5th

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. 

  • 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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