Students can use Joyful Mathematics Class 2 Solutions Chapter 2 Shapes Around Us (3D Shapes) to explore alternative methods of solving problems.
Joyful Mathematics Class 2 NCERT Solutions Chapter 2 Shapes Around Us (3D Shapes)
Let US Do (Page 17):
A. Look at the picture and observe different musical instruments.
(i) Circle 
the musical instruments that are similar in shape to a 
drum.
Answer:
Do it yourself.
(ii) Tick 
the musical instruments that are similar in shape to a 
matka.
Answer:
Do it yourself.
(iii) Tick the shape similar to the shape of a
shehnai 
Answer:
Do it yourself
(iv) How is the shape of harmonium 
different from the shape of a drum?
Answer:
Shape of harmonium is similar to rectangle while shape of drum is similar to cylinder.
B. Have you seen or played any of the musical instruments? Share your experiences with your classmates.
Answer:
Do it yourself.
C. Cross the odd one out.
Answer:
Match the musical instruments and objects with their solid shapes. One has been done for you.
Answer:
Let us Do (Page 20) :
If you also have to decorate the following shapes in the same way with stars, ribbon stripes and pompom balls, how many of these items will you need?
Answer:
Let us Think (Page 21) :
Look at the objects and fill the table.
Answer:
Let us Think (Page 22) :
Name the objects which have –
Answer:
Project Work :
Take a cardboard sheet and try to make an object with four faces.
Now, try to make an object with one face.
