Think about Sara's work and reflect on the following questions:

• What conjecture is the student able to make on her own?
• How does the student justify this conjecture?
• What is the limitation of the student's conjecture?
• How does the teacher help the student find a general pattern for any number of rods? Can you think of another approach?
• What question might you ask to help the student clarify her explanation in the last question?

  Observe another example of student work