| Part 3: Students Presenting Solution Methods [Begin:
15:58]
|
After about six minutes during which the teacher observes and assists students as
they work individually, the teacher asks a student to share her solution method.
The student reports that she computed the cost for ten 230-yen cakes and that the
total was too much. She reduced the number of 230-yen cakes by one and computed again.
She said she had planned to continue this process but ran out of time. Other students,
who used the same method, build on her explanation and report that the solution is
three 230-yen cakes and seven 200-yen cakes. |
