Geometrical Shapes in Grade 2 Mathematics
Grade - 2
Subject - Mathematics
Unit - Geometry
Topic - Geometrical shapes
School – Army School Roorkee
Prepared by Mrs. Ranjana
Major Concepts
•
Develop understanding and appreciation of
geometrical shapes and their characteristic.
•
Develop and exhibit creativity.
•
Develop power of thinking and reasoning.
•
Develop scientific temper.
;
;
Minor Concepts
:
•
Students will be able to recognized
different geometrical shapes.
•
Students will be able to relate various
shapes like that of bangle, cart,cone,box
etc with circle,triangle,quadrilateral etc.
Menu
:
•
Contents
•
Quiz
Contents
:
•
Polygon
•
Triangle
•
Quadrilateral
•
Circle : Parts of a circle
•
Radius
•
Diameter
•
Chord
•
Circumference
Polygon
:
•
A simple closed figures by joining
three or more line segments is
called polygon
Lets study about types of polygons
Triangle
:
It is a closed figure formed by joining
three line segments . So , a triangle is
a polygon . Different shapes of triangle
are shown below:
The three line segments which form the
triangle are called its sides .
Quadrilateral :
•
It is a closed figure formed by joining
four line segments called quadrilateral.
So quadrilateral is a polygon. Different
shapes of quadrilateral are shown below:
•
The four line segments which form a
quadrilateral are called its sides.
Circle
:
A closed curve formed in such a way
that any point on this curve is
equidistant from a fixed point which is
in the interior of the curve.
A
D
O
OA = OB = OC = OD
o
B
C
Parts of a circle
:
•
Center
•
Radius
•
Diameter
•
Chord
•
Circumference
Center
:
•
A fixed point in the interior of
circle whose distance from all the
points on the circle is same.
A
B
C
D
O
OA = OB = OC = OD
Radius
:
•
The distance between the center and
any point on the circle is called the
radius of the circle.
A
A
A
A
A
A
O
Diameter
:
•
The line which passes through the center
and meet any two points on the circle is
called the diameter.
A
B
A diameter is twice the length of radius.
O
Chord
:
•
The line which meet at any two points on
the circle .
•
A diameter is the longest chord of a
circle.
CD is the chord of the circle.
A
B
C
D
O
o
Circumference
:
•
Length of a closed curve forming the
boundary of the circle is called the
circumference of the circle
.
Quiz:
Well now its time to test those grey cells of
yours!So all the best and happy clicking!
SCORING:
10 correct: Excellent
8-7 correct: Very good
5-7correct: good
3-4 correct:Fair
0-2 correct:poor
Q1:A circle is a:
(1)Simple close curve (2)Open curve
Q2:A chord that goes through the center
of the circle:
(1)Chord (2)Diameter
Q3:A line that run between the circle
and its center:
(1)Radius (2)Diameter
Q4:A line segments that join two points
on the circle:
(1)Chord (2)Diameter
Q5:The distance round the circle is
called as:
(1)Circumference
(2)Chord
Q6:Can a circle have more than one
center:
(1)No
(2)Yes
Q7:Diameter is a:
(1)Twice of a radius (2)Half of a radius
Q8:If the radius of the circle is6cm ,then
its diameter is:
(1)12cm (2)6cm
Q9:If diameter of the circle is 12cm, then
its radius is:
(1)12cm
(2)6cm
Q10:If radius of the circle 4cm, then its
diameter is
(1)8cm (2)4cm
WELLDONE!CORRECT ANSWER!
Now for the next question click on the
next question.
SORRY !
INCORRECT ANSWER!
Better luck next time.
This powerpoint was kindly donated to
www.worldofteaching.com
http://www.worldofteaching.com
is home to over a
thousand powerpoints submitted by teachers. This is a
completely free site and requires no registration. Please
visit and I hope it will help in your teaching.
Dive into the world of geometrical shapes in Grade 2 Mathematics at Army School, Roorkee. Understand the characteristics, types, and properties of polygons, triangles, quadrilaterals, and circles. Develop creativity, critical thinking, and scientific temper while recognizing and relating different shapes. Enhance your understanding of radius, diameter, chord, and circumference of circles in this engaging unit on geometry.
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Presentation Transcript
Grade - 2 Subject - Mathematics Unit - Geometry Topic - Geometrical shapes School Army School Roorkee Prepared by Mrs. Ranjana
Major Concepts Develop understanding and appreciation of geometrical shapes and their characteristic. Develop and exhibit creativity. Develop power of thinking and reasoning. Develop scientific temper.
Minor Concepts: Students will be able to recognized different geometrical shapes. Students will be able to relate various shapes like that of bangle, cart,cone,box etc with circle,triangle,quadrilateral etc.
Menu: Contents Quiz
Contents: Polygon Triangle Quadrilateral Circle : Parts of a circle Radius Diameter Chord Circumference
Polygon : A simple closed figures by joining three or more line segments is called polygon Lets study about types of polygons
Triangle : It is a closed figure formed by joining three line segments . So , a triangle is a polygon . Different shapes of triangle are shown below: The three line segments which form the triangle are called its sides .
Quadrilateral : It is a closed figure formed by joining four line segments called quadrilateral. So quadrilateral is a polygon. Different shapes of quadrilateral are shown below: The four line segments which form a quadrilateral are called its sides.
Circle : A closed curve formed in such a way that any point on this curve is equidistant from a fixed point which is in the interior of the curve. B A o O C D OA = OB = OC = OD
Parts of a circle : Center Radius Diameter Chord Circumference
Center: A fixed point in the interior of circle whose distance from all the points on the circle is same. C O B D A OA = OB = OC = OD
Radius: The distance between the center and any point on the circle is called the radius of the circle. O A
Diameter : The line which passes through the center and meet any two points on the circle is called the diameter. O A B A diameter is twice the length of radius.
Chord : The line which meet at any two points on the circle . A diameter is the longest chord of a circle. C O D o A B CD is the chord of the circle.
Circumference : Length of a closed curve forming the boundary of the circle is called the circumference of the circle.
Quiz: Well now its time to test those grey cells of yours!So all the best and happy clicking! SCORING: 10 correct: Excellent 8-7 correct: Very good 5-7correct: good 3-4 correct:Fair 0-2 correct:poor
Q1:A circle is a: (1)Simple close curve (2)Open curve Q2:A chord that goes through the center of the circle: (1)Chord (2)Diameter
Q3:A line that run between the circle and its center: (1)Radius (2)Diameter Q4:A line segments that join two points on the circle: (1)Chord (2)Diameter
Q5:The distance round the circle is called as: (1)Circumference (2)Chord Q6:Can a circle have more than one center: (1)No (2)Yes
Q7:Diameter is a: (1)Twice of a radius (2)Half of a radius Q8:If the radius of the circle is6cm ,then its diameter is: (1)12cm (2)6cm
Q9:If diameter of the circle is 12cm, then its radius is: (1)12cm (2)6cm Q10:If radius of the circle 4cm, then its diameter is (1)8cm (2)4cm
WELLDONE!CORRECT ANSWER! Now for the next question click on the next question.
SORRY ! INCORRECT ANSWER! Better luck next time.
This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.
