Mesoderm, but on the inside, what are you going to see? - Endoderm. - Endoderm. What else are we going to do after this? - Ectoderm. - We're going to make ectoderm, so flatten out your ectoderm and wrap your endoderm and mesoderm in your ectoderm. Now, I'm going to need one more thing. What are we missing up there? - Digestive tract. - We need a digestive tract.
Here we see tracking, asking broad questions and having choral responses, as well as assessing with the questions about what is already in their model. The teacher then has the students direct her to the missing parts to fill them in.