Compare your initial thoughts with aspects of the geometry lessons using the following resources, which include the video teacher's thoughts on how she was attempting to establish a classroom atmosphere where mathematics is learned with understanding. Additional information on the establishment of class norms can be explored under the Planning the Lessons selection of the Issues matrix.

• Overview Video
• Issues Matrix
• Index of Teacher Interviews
• Video of Lesson Sequence:
  • Day 1- Visualizing two-dimensional drawings of three-dimensional shapes
  • Day 2- Determining the number of cubes required to fill a box
  • Day 3- Informal explorations of the impact of dimension on volume of a box
• Articles:
  • Yackel, E., Cobb, P., Wood, T., & Wheatley, G. (1988). Creating a problem-solving atmosphere. Arithmetic Teacher, 36(1), 46-47.
• Links:
  • NCTM