Page 4 - PPT
P. 4
Sign language:
Sign language is a visual
way of communicating
where someone uses hand
gestures and movements,
body language and facial
b o d y l a n g u a g e a n d f a c i a l
expressions to
communicate.
Smoke signal:
Ancient people used to
give smoke signal to
warn near by villagers if
w a r n n e a r b y vi l l a g e r s i f
there is any danger. In
this way they were able
to transmit a message
as far as 750km in a few
hours.
