Analysis+of+Student+Thinking

VIDEO 1: (Grades K-2)[] 1. View the videoclip. Which levels of geometric thinking are targeted with this activity?

VIDEO 2: (Grades 3-5) [] (Formulating rules for triangles) 1. View the videoclip of the geometry lesson and look for evidence that students are reasoning at van Hiele level 1 or van Hiele level 2. 2. In what ways does the teacher encourage students to move to the next level?