(Initially posted December 17, 2020) Huw Lloyd helps me to rethink a lesson that I like but also know is flawed. The suggestions are adaptable to many types of lesson revision.   

The lesson, influenced by Vygotsky's idea that "word meaning develops,"  is summarized here: http://tiny.cc/z7v6tz

Full chat here: http://tiny.cc/r5v6tz  

Main reference: "The primary result of this work . . .that constitutes the conceptual  center of our investigation (is) the finding that word meaning develops.  The discovery that word meaning changes and develops is our new and  fundamental contribution to the theory of thinking and speech. It is our  major discovery, a discovery that has allowed us to overcome the  postulate of constancy and unchangableness of word meaning which has  provided the foundation for previous theories of thinking and speech."  (Vygotsky, 1987, p. 245)  The collected works of L. S. Vygotsky. Vol.  1. Problems of general psychology, Including the volume Thinking and  Speech. New York: Plenum. Vygotsky, L. S.

Related: "Where do new words come from?" - Marcel Danesi (TED-ED) - http://tiny.cc/flx6tz