Students can use Joyful Mathematics Class 2 Solutions Chapter 4 Shadow Story (Togalu) to explore alternative methods of solving problems.

## Joyful Mathematics Class 2 NCERT Solutions Chapter 4 Shadow Story (Togalu)

Let us Talk (Page 33) :

A. Have you seen your own shadow or the shadow of a tree, a dog, a cow or any other animal?

Answer:

Yes, I have seen own shadow, shadow of a tree, a dog and a cow.

B. When do we see a shadow?

Answer:

We see a shadow when object is placed in light.

C. When does a shadow vanish?

Answer:

A shadow vanish when there is no light.

Fun with Shadows (Page 33) :

Now put the torch light on the objects around you and observe the shapes of their shadows.

A. Will the size of shadows change on changing the position of the torch?

Answer:

Yes

B. At what time of the day is your shadow longest?

Answer:

Early morning or early evening.

C. At what time of the day is your shadow shortest?

Answer:

At noon.

Let us Trace (Page 34) :

A. Trace the shape of the objects around you. For example, eraser, leaf, matchbox, sharpener, pencil colour, etc.

Answer:

B. Draw the shapes you get after tracing.

Answer:

Let us Think (Page 34) :

Write the names of objects that have the same trace as:

A. Bottle cap

Answer:

B. Eraser

Answer:

Hide and Seek (Page 35 – 37):

They all are playing together now.

A. Circle can hide in the clock, ball, ____________, ____________.

Answer:

Circle can hide in the clock, ball, table, hanging round light.

B. Rectangle can hide in the shoe box, photo frame, ____________, ____________.

Answer:

Rectangle can hide in the shoe box, photo frame, door mate, TV .

C. But Triangle and Square are confused and wonder where to hide now. Suggest them some places where they can hide.

(i) Triangle can hide in cap ____________, ____________.

Answer:

Triangle can hide in cap, wall hanging on door.

(ii) Square can hide in dice ____________, ____________.

Answer:

Square can hide in dice, corner table.

Colour the Carpet :

Colour the Triangles red.

Colour the Circles green.

Colour the Rectangles yellow.

Colour the Squares blue.

Answer:

Make your own design with different shapes and colour them.

Answer:

Catch the Corner! (Page 38) :

Look at the picture (see NCERT Textbook, page 38) and answer the following questions.

A. Name the children standing near the corners of the table.

Answer:

Udit, Paramjeet, Naysa and Seema.

B. Can you tell who will clap next?

Answer:

Wasim

C. Where is Wasim standing?

Answer:

Wasim is standing between the corners.

D. Can this game be played around a round table? Why or why not?

Answer:

No, this game can not be played around a round table because round table has no corners.

E. Name the objects around us that have straight edges.

Answer:

Table, chair, book, wall, almirah.

F. Many objects around us have curved edges. Some are shown below. Explore and share the names of such objects that you see around.

Answer:

Lemon, ladoo, tyre, marble, coin.

Let us Think (Page 39) :

A. How many corners do objects with curved edges have?

Answer:

0

B. Name the objects that have both straight and curved edges?

Answer:

gas cylinder pipe

Origami Fun! (Page 39)

A. Take a paper and fold it to make it a square.

B. It has corners and edges.

Answer:

It has 4 corners and 4 edges.

C. Fold it in half by joining two corners as shown in the picture.

D. Tick the shape which you get.

i.

ii.

iii.

Answer:

iii.

E. This shape has corners and edges.

Answer:

This shape has 3 corners and 3 edges.

F. Fold the paper again into half to get a triangle and then unfold it.

G. Now make two triangles from two corners of the triangle.

H. How many corners are there now?

Answer:

9

I. Fold the third corner upwards and make the nose and eyes as shown.

Your paper dog is ready!

Patterns (Page 40) :

A. Make designs by stamping objects having different shapes like â€” bottle caps, erasers, pencils, corns, etc.

Answer:

B. Radha is applying mehandi on her hands. You can aâ€™so trace your hand to make a mehandi pattern or design.

Answer:

Let us Do (Page 41) :

Nitya is playing with leaves and making patterns.

Now you also collect some leaves and make a pattern. Paint one side of the leaf and print it on the space given below.

Answeer:

Students try yourself.

NCERT Textbook, Page 42 :

Extend the following patterns.

Answer:

Kikku rabbit jumps on the 4th tile. He forgot where to jump next. Help him by drawing a circle on the next tiles.

1, 4, ____, ____, ____, ____, ____, ____

Answer:

1, 4, 7, 10, 13, 16, 19, 22, 25, 28

Kikkuâ€™s mother also jumps on the 6th tile. Help her by putting a on the next tiles.

1, 6, 11, ____, ____, ____, ____, ____

Answer:

1, 6, 11, 16, 21, 26, 31, 36

Let us Do (Page 43) :

Extend the following number patterns.

A. 5, 10, 15,

Answer:

5, 10, 15, 20, 25, 30, 35, 40

B. 7, 14, 21,

Answer:

7, 14, 21, 28, 35, 42, 49, 56

C. 1, 7, 13,

Answer:

1, 7, 13, 19, 25, 31, 37, 43

Project Work:

Make a wall hanging using cutouts of different shapes with the help of your elders to decorate your home or classroom.