Elapsed Time Mountain Strategy Scholastic（运行时间山学习策略）.pdfVIP

Elapsed Time Mountain Strategy You will create a timeline with mountains, hills, and rocks. Fill in the times used as you go. Mountains = 1 hour Hills = 5, 10, 15, 20, or 30 minute increments Rocks = 1 minute increments Sample Problem: Greg was dropped off at the movies at 4:40pm and his mom picked him up at the theater at 7:37pm. How long was Greg at the theater? 1. Draw a timeline listing your start time at the left-hand side and your end-time at the right-hand side. 4:40 7:37 2. Draw mountains, hills, or rocks to show the time elapsed. Write the time moved inside the drawing. Put the new time where the drawing ends. Teacher Tip: Starting with elapsed hours every time is easy. You can see which students can move whole hours easily. My teacher talk sounds like this: If it is 4:40 and we move 1 hour, what time will it be? 5:40. If we move another hour, what time will it be? 6:40. If we move another hour, what time will it be? 7:40. We are only trying to get to 7:37, so 7:40 is too far. We can move 2 hours, but then we will have to change our strategy. Teacher Tip: Encourage students to move by very simple times first, for example 5 minutes at a time, even if jumping 15 minutes makes sense. Students who can tell time and catch on to the concept quickly jump larger chunks on their own. Show how the problem can be worked with different strategies and still come out the same (for example, some students move minutes first, some move 5 minutes at a time and others move in 15 minute chunks, etc.) 1 1 10 4:40 5:40 6:40 6:50 7:37 3