src: i.ytimg.com
An object lesson is a teaching method that consists of using a physical object or visual aid as a discussion piece for a lesson.
Video Object lesson
Description
The object lesson approach is promoted in the educational philosophy of Johann Heinrich Pestalozzi, who held that teaching should begin with observation of objects which help students recognize concepts.
Maps Object lesson
History
Object lessons were important elements in teaching during the Victorian era of the mid- to late-nineteenth century. They are commonly used in religious instruction.
src: i.ytimg.com
References
Source of the article : Wikipedia