Teacher’s Note : Teacher narrates the story of sheep and fox to enhance the usage of the words such as close and open.

__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.

Tags : Geometry | Term 2 Chapter 1 | 2nd Maths , 2nd Maths : Term 2 Unit 1 : Geometry

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2nd Maths : Term 2 Unit 1 : Geometry : Properties of 2D shapes | Geometry | Term 2 Chapter 1 | 2nd Maths

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