A teacher asked Class II students to mark some points on a sheet of paper. Later, she asked them to draw a rectangle on the same sheet without passing through any of these points, and then count the points inside the rectangle. Through this activity, the teacher CANNOT teach the concept of:

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?