During a recent interview with Chrissy Teigen, Vice President Kamala Harris said, “I’m going to confess, I love Venn diagrams. If you’re ever in a moment of conflict, pull out a Venn diagram, they’ll ...

This paper describes the use of a three-circle Venn diagram as a vehicle for introducing pre-service elementary teachers to pedagogical content knowledge (PCK). Each circle of the diagram represents ...