How can you introduce terms from geometry and measurement so that your students' vocabulary will enhance their understanding of concepts and definitions? What can you say to clarify the thinking of a student who claims that perimeter is always an even number? How does knowing what changes or stays the same when shapes are transformed help you support and extend your students' understanding of shapes and the space that they occupy?How much do you know ... and how much do you need to know?Helping your students develop a robust understanding of geometry and measurement requires that you understan
