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=== Learning objectives ===
[[Category:Mathematics]]
[[Category:Mathematics]]
[[Category:Class 9]]
[[Category:Class 9]]
=== Activity No # 1 ===
* Estimated Time - 40 minutes
* Materials/ Resources needed; Paper, pencil, and scale.
* Prerequisites/Instructions, if any:
# The students should know points and line segments.
* Multimedia resources
* Website interactives/ links/ Geogebra Applets
* Process (How to do the activity):
# Mark three non-collinear point P, Q and R on a paper.
# Join these points in all possible ways. The segments are PQ, QR and RP.
# A simple close curve formed by these three segments is called a triangle. It is named in one of the following ways.
# Triangle PQR or Triangle PRQ or Triangle QRP or Triangle RPQ or Triangle RQP .
* Developmental Questions (What discussion questions):
# What are plane figures ?
# What is a polygon ?
# How many points are needed to make a traingle ?
* Evaluation (Questions for assessment of the child):