Use the following information for the question(s) that follow.
Tim Thrift, a world history teacher, wants his students to understand the characteristics of New Stone Age people, so he prepares the following vignette.
You're part of an archeological team, and you've discovered artifacts at a site. Some of the artifacts include spear points that are still quite sharp, having been chipped precisely from hard stone. You also see several cattle and sheep skulls and some threads that appear to be the remains of coarsely woven fabric.
Tim has his vignette printed in large type on an overhead which he has ready and waiting. As part of his classroom routines he has taught his students to be in their seats and waiting quietly when the bell rings.
Tim prepared his vignette because he believed that the description of New Stone Age people as presented in his students' textbooks was too abstract to be meaningful. Of the following, which best describes the type of knowledge on which Tim's belief was primarily based?
◦ His knowledge of content
◦ His pedagogical content knowledge
◦ His knowledge of learners and learning
◦ His general pedagogical knowledge
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