Quotes from Charlotte Danielson

Reinforcing the notion that a primary purpose of school is for students to develop conceptual understanding of complex material, the teacher conveys that it is not sufficient for students to be able to go through the motions, to follow a procedure without understanding why. No—they must develop conceptual understanding; it must build from one idea to another, and students should be able to explain to the teacher, or to another student, why something is the way it is.