Teacher resources and professional development across the curriculum
Teacher professional development and classroom resources across the curriculum
Observing Student Problem Solving
|Introduction | Which Group Paid More? | Problem Reflection #1 | Sharing-Division Word Problem | Problem Reflection #2 | Classroom Practice | Observe a Classroom | Summary | Your Journal|
Ms. Ramiro's third-grade class is beginning to learn about division. She introduced the division problem below by saying, "Please work with your partner to write a sharing-division word problem. Your problem should go with the number sentence '25 ÷ 10 = ?' Try not to have food in your problem! Then, solve your problem."
Anna: Sharing division -- is that like the cookies problems? Like, 25 cookies for 10 people, how much is each person's fair share?
Anna: We could do baseball cards.
Anna: That's good. What would the answer be?
Anna: It would be dumb to tear them in half. You can't go to the movies with half a ticket.
Anna: Five tickets isn't enough to give them one more each. But, there's enough to give one-half to each, like we did in some of the cookies problems.
Anna: They could each have two dollars -- look at our work on the tickets problem. They would use up 20 dollars that way. What about the other five dollars?
Anna: Why don't we try it like in the cookies problems and give half a dollar to each kid? If you break five dollars in half, you get 10 half-dollars.
|Teaching Math Home | Grades 3-5 | Problem Solving | Site Map | © ||