Let's look at a lesson related to the Which Group Paid More? problem. In this video segment, you can observe third-grade students as they work on finding a unit price for a variety of everyday items. The problem encourages students to search for different problem-solving strategies. Students use visual representations and diagrams to help solve the problem. The teacher, Ms. Bahr, provides guidance and asks questions to assist with the problem-solving process.

Read the questions below before viewing the video, and keep them in mind as you watch:

• What do you think are the teacher's mathematical content goals for this lesson?
• What strategies or methods do the students use to determine the unit cost?
• What types of help does the teacher give?

Now watch the video excerpt (duration 7:33) at left of Ms. Bahr's third-grade class as they work on finding the unit prices.

After you have watched the video, answer the three questions above. (You may want to watch the video again to help you more fully answer the questions.)

  Observe problem solving in the classroom setting