This lesson explores elapsed time through the use of timelines and the Mountain, Hill, Rock strategy. The lesson begins with a review of telling time and different ways to express time.
Next, students will learn to use timelines along with representations of hours, and minutes to calculate elapsed time. They will also learn how to use the same representations and strategy to determine end times or start times when given the amount of elapsed time.
Included in the lesson are guided practice along with interactive student "Try It" pages and a link to an online quiz at the end.