EASY
4th Tamil Nadu Board
IMPORTANT
Earn 100

Observe the pictures and mention the activities where work is done and the ones where work is not done.
Question Image 

Chapter-Wise 3D Science Videos from Tamil Nadu Board Standard 4 Term I Science

How Does an Axle Turn the Wheel?
05 min 14 sec

How Does an Axle Turn the Wheel?

It is easier to pedal the bicycle over a distance than walk that distance. Learn how the small pedals help us cover large distances due to the presence of an...
What Is Wedge?
01 min 28 sec

What Is Wedge?

A wedge is one of the simplest machines. Learn how to use different types of wedges to complete different types of tasks related to cutting, chopping, and po...
Various Simple Machines in Everyday Life
02 min 50 sec

Various Simple Machines in Everyday Life

Humans have always tried to simplify their tasks by making machines do their work. Here, we list some of the simple machines that have simplified our lives o...