This Problem Set is a part of the Lesson 12, Unit 8, Grade 2. In this lesson, students make paper clocks from templates. Having constructed this tool, students then practice telling time to the nearest half and quarter hour. They relate 30 minutes to a half hour and 15 minutes to a quarter hour, associating, for example, "half past 7" with 7:30 or 2:45 with "a quarter to 3."