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NCERT Textbook - Shapes And Designs | Mathematics for Class 3: NCERT PDF Download

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60
Shapes and Designs
Make a Clapper
1 2
3 4
5
6
5
2019-2020
Page 2


60
Shapes and Designs
Make a Clapper
1 2
3 4
5
6
5
2019-2020
61
Have Fun with Shapes
Colour the clown following the directions given below :
Triangles Red Squares Yellow
Rectangles Blue Circles Green
2019-2020
Page 3


60
Shapes and Designs
Make a Clapper
1 2
3 4
5
6
5
2019-2020
61
Have Fun with Shapes
Colour the clown following the directions given below :
Triangles Red Squares Yellow
Rectangles Blue Circles Green
2019-2020
62
How many triangles are there in the following figures?
Find the biggest rectangle
in the figures given below.
2019-2020
Page 4


60
Shapes and Designs
Make a Clapper
1 2
3 4
5
6
5
2019-2020
61
Have Fun with Shapes
Colour the clown following the directions given below :
Triangles Red Squares Yellow
Rectangles Blue Circles Green
2019-2020
62
How many triangles are there in the following figures?
Find the biggest rectangle
in the figures given below.
2019-2020
63
Chhotu Guddu Bunty Tinku
Meeta Raja
Edges and Corners
Meeta and her 5 friends were playing a game. Tinku was
blindfolded and asked to keep clapping as long as he wished
while the others would move round a table. The moment Tinku
stopped clapping, everybody would stop wherever they were.
The child who was not at a corner would be out. Then she
would be blindfolded.
a) Looking at the picture given above, can you tell who is out?
b) Where is Guddu standing?
c) Can this game be played around a round table? Why?
Many things around us have straight edges. For example:
edge
edge
edge
edge
edge
edge
2019-2020
Page 5


60
Shapes and Designs
Make a Clapper
1 2
3 4
5
6
5
2019-2020
61
Have Fun with Shapes
Colour the clown following the directions given below :
Triangles Red Squares Yellow
Rectangles Blue Circles Green
2019-2020
62
How many triangles are there in the following figures?
Find the biggest rectangle
in the figures given below.
2019-2020
63
Chhotu Guddu Bunty Tinku
Meeta Raja
Edges and Corners
Meeta and her 5 friends were playing a game. Tinku was
blindfolded and asked to keep clapping as long as he wished
while the others would move round a table. The moment Tinku
stopped clapping, everybody would stop wherever they were.
The child who was not at a corner would be out. Then she
would be blindfolded.
a) Looking at the picture given above, can you tell who is out?
b) Where is Guddu standing?
c) Can this game be played around a round table? Why?
Many things around us have straight edges. For example:
edge
edge
edge
edge
edge
edge
2019-2020
64
Other things have curved edges. For example:
a) Look around you and identify things with straight and
curved edges.
b) Do the things with straight edges have corners?
c) Do the things with curved edges have corners?
d) Try to find things which have both straight and curved edges.
Activity  Time
1. Take a rectangular sheet of paper.
2. Count its corners.
3. Now fold one of its corners.
a) How many corners does it have now?
b) How many corners will you get by folding
i) 2 corners
ii) 3 corners
iii) 4 corners
c) Can you fold this paper in such a way that it has only
three corners? You are allowed only two folds.
What shape will you get?
4. Repeat the activity with a square sheet of paper.
edge
edge
2019-2020
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FAQs on NCERT Textbook - Shapes And Designs - Mathematics for Class 3: NCERT

1. What are the different types of shapes and designs discussed in the NCERT Textbook?
Ans. The NCERT Textbook on Shapes and Designs discusses various types of shapes and designs, including polygons, circles, triangles, quadrilaterals, and patterns. It explores their properties, characteristics, and how they can be constructed and manipulated.
2. How can I identify different types of polygons based on their sides and angles?
Ans. Different types of polygons can be identified based on their sides and angles. For example, a triangle has three sides and three angles, a quadrilateral has four sides and four angles, and a pentagon has five sides and five angles. By counting the number of sides and angles, you can determine the type of polygon.
3. How can I construct different shapes using a compass and ruler?
Ans. To construct different shapes using a compass and ruler, follow these steps: 1. For circles, place the point of the compass on the desired center and draw an arc. 2. Without changing the compass width, place the point on the intersection of the arc and draw another arc intersecting the first. 3. Connect the intersection points of the arcs to form the circle. 4. For triangles, draw a line segment using the ruler, then use the compass to mark the same length on the segment's endpoint. Connect the endpoints to form a triangle. 5. Similar construction methods can be used for other shapes like squares, rectangles, and pentagons.
4. How can I determine the perimeter and area of different shapes?
Ans. The perimeter of a shape is the total length of its boundary, while the area is the measure of the space enclosed by the shape. To determine the perimeter of a shape, add the lengths of all its sides. For example, to find the perimeter of a rectangle, add the lengths of all four sides. The area of a shape can be calculated differently depending on the shape. For example, the area of a rectangle can be found by multiplying its length and width. The area of a triangle can be calculated by multiplying the base length by the height and dividing the result by 2. The area of a circle can be found using the formula πr², where r is the radius of the circle.
5. How can I identify and create patterns using shapes and designs?
Ans. Patterns can be identified and created using shapes and designs in various ways. Some common methods include: 1. Identifying repeated shapes or designs in a sequence. 2. Creating symmetrical patterns by reflecting shapes or designs across a line of symmetry. 3. Using a combination of shapes to create a repeating pattern. 4. Experimenting with rotations and translations of shapes to create different patterns. By observing and manipulating shapes and designs, you can identify patterns and use them to create new ones.
39 videos|119 docs|55 tests
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