Which of the following is not related to developing the concept of a circle among primary grade learners ?

Correct option is C

The answer is (c) Showing a model of globe in the class.
While introducing a model of a globe can be useful for teaching geography, it is not directly related to developing the concept of a circle among primary grade learners. The focus at this level should be on concrete experiences and hands-on activities that allow students to explore the properties of circles firsthand.