UNIT 1
Geometry
Properties of 2D shapes
Travel
Through
Ask the
students to form a circle by holding their hands. Then call any three students
to act like lamb, sheep and fox. Make them play the game as follows.
Keywords: Open shape, Closed shape
Teacher’s Note : Teacher narrates the story
of sheep and fox to enhance the usage of the words such as close and open.
Learn
Properties of 2D shapes
Let us learn the properties of 2D shapes.
Square
This stamp is in the shape of a square.
Square is a closed shape. Square has four sides
It has four corners.
All the four sides
are equal.
Rectangle
50 rupees note is
in the shape of a rectangle.
Rectangle is a
closed shape. It has four sides.
It has four corners.
Opposite sides are
equal.
Triangle
Traffic signal is in
the shape of a triangle.
Triangle is a
closed shape. It has three sides.
It has three corners.
Sides can be equal
or unequal.
Circle
Coin is in the shape
of a circle.
Circle is a closed
curve.
Practice
Write “C” for closed shapes and “O”
for open shapes in the given space.
Complete the table.
Try This
Observe
the shape in the geoboard and draw as many similar shapes of various sizes in
the dot sheet given on the right side of it.
Teacher’s
Note: Teacher can
facilitate children to form 2D shapes in geoboard using rubberbands.
Think
Like a Mathematician
Can you
form a circle using rubberband in a geoboard?
Yes, can.
Related Topics
Privacy Policy, Terms and Conditions, DMCA Policy and Compliant
Copyright © 2018-2026 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.