Which sounds do you hear during the recess in the school ?

Why do we shiver during winter?

Following are some pictures of disasters. Which precautions would you take during those disasters?

When there is silence in the classroom , close your eyes and sit quietly. Which sounds in your surroundings can you hear now ? Prepare a common list of sounds and discuss them.

Produce a sound 'bho…bho…' just like a dog-barking and 'meow…meow…' just like a mewing cat. Carefully notice the tension on the vocal cords, when you produce these sounds. Do you feel that the tension on the vocal cords changes when you produce these two different sounds?

What do you mean by deforming?

Which changes do you notice in leather articles and gunny (jute) bags during the rainy season?

Whether there had been mock drill by fire fighters under the disaster management scheme in your school? Which techniques did you see during the drill?

Do you observe any relation between the frequency of generated sound and the height of the air column in the glass cup?