Overview

This part focuses on noticing the features of explanations and the use of representations in the work on the Three-Coin Problem. It includes considering:

• What features of the explanations supported your understanding?
• What do you notice about the use of language, representations, and structure to justify or critique solutions?

Key Points

Noticing the features of explanations provides resources for planning explanations that are shared with students, identifying traits to listen for as students provide explanations, and guiding the questions that are asked about explanations.