Page 129 - Viva ICSE Science 4 : E-book
P. 129
Do and Learn
Group Activity
Form groups of four students and make a model to
show friction varies with the material from which a
surface is made. other forces. Find out diff erent
Project Time
Using the Internet and the books
learn about how force of friction
works in coordination with
examples from your daily life
when these forces work together.
Make a project report on the
collected information. Draw or
paste well-labelled pictures of
them.
all the examples and write about
Observation Corner
Observe the pictures carefully and explain how friction
has been increased/decreased in both the cases.
115
