Ryan Has Just Received His First Teaching Position

Ryan has just received his first teaching position. After a celebratory dinner with his wife, he sits down to plan his first lesson unit. As images of multiple activities, materials, and projects start to run rampant, he tries to focus on the content of the first lesson. As he glances at the topic, only vague principles come to mind, so he looks down his list of lesson units for the school year. He realizes in all his enthusiasm over diverse and effective teaching methods and materials, he has lost sight of the heart of the matter: the scientific content! Which of the following areas is Ryan questioning his abilities in?

A) Reciprocal teaching
B) Transactional instruction
C) Expert knowledge
D) Pedagogical content knowledge