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==Concept #1. Introduction to polygons and nomenclature.==
==Concept #1. Introduction to polygons and nomenclature.==
===Learning objectives===
===Learning objectives===
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# Lines intersect to form figures.
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# Two dimensional closed figures can be of varied shapes.
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# Plane closed figures with ≥ 3 sides are known as polygons.
# They can be defined as two-dimensional, closed, plane shapes composed of a finite number of straight sides that meet at points called vertices.
==Notes for teachers==
==Notes for teachers==
===Activity No # 1. Which polygon am I ? ===
===Activity No # 1. Which polygon am I ? ===
*Prerequisites/Instructions, if any:
*Prerequisites/Instructions, if any:
# The students should know that lines intersect to form figures.
# The students should know that lines intersect to form figures.
# In other words plane closed figures have atleast 3 sides.
# In other words plane closed figures with ≥ 3 sides are known as polygons .
# The intersecting points of two lines is known as a vertex and the lines are the edges/sides.
# The intersecting points of two lines is known as a vertex and the lines are the edges/sides.
# The student should know the meaning of greek numerals uni, bi, tri ....etc.
# The student should know the meaning of greek numerals uni, bi, tri ....etc.
