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By Mrs. Stephanie Estes is the amount of time that passes from the start of an activity to the end of an activity. For example: You want to figure out how much time you spend in school each day. If your school day starts at 8:00 am and ends at 3:00 pm, how much time is that? Next are some ways that you can find the answer! Count Forward on the clock. Start School starts at 8:00 am and ends at 3:00 pm, how much time is that? End Count Forward on the clock. Start School starts at 8:00 am and ends at 3:00 pm, how much time is that? End Count Forward on the clock. School starts at 8:00 am and ends at 3:00 pm, how much time is that? End Count backwards on the clock. School starts at 8:00 am and ends at 3:00 pm, how much time is that? End Use Military Time 24 23 13 22 14 21 15 20 16 19 17 18 A military clock continues counting after 12:00 noon. 24 23 13 22 14 21 15 20 16 19 17 18 A military clock continues counting after 12:00 noon. Like this 24 13 23 22 14 21 15 20 16 19 18 17 A military clock continues counting after 12:00 noon. Like this 24 13 23 22 14 21 15 20 16 19 18 17 Find the elapsed time from 7:45 A.M. to 3:05 P.M. Think about it like a subtraction problem. Just remember: - 1 hour is equal to 60 minutes. So when you regroup, you need to add 60 to the total number of minutes, not 10 as you may be used to doing. - Add 12 to the p.m. time to get your military time. So in this problem 3:05 pm becomes 15:05 For more practice go to http://www.quia.com/rr/6373.html