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About Elapsed Time Workbook
Elapsed Time Workbook contains lessons and exercises suitable for grades 3 and 4. The first lesson, “How Many Hours Pass”, uses a number-line diagram to help students figure out how many complete hours pass from one given time to the other, including if there is a change from AM to PM. The lesson “How Many Minutes Pass?” encourages students to use a practice (analog) clock or visualize the minute hand moving along the clock face to figure out the elapsed time. It also explains the subtraction method for easy time intervals. The next two lessons about calculating elapsed time emphasize dividing a time interval into parts that are easily calculated. For example, to find the elapsed time from 10:30 AM to 7:00 PM, the student learns to find the elapsed time from 10:30 AM to 12:00 noon, and then from 12:00 noon to 7 PM. The same principle is followed when the time-interval seems more complex. Lastly, the lesson “Elapsed Time or How Much Time Passes”, introduces the concept of adding or subtracting hours and minutes vertically in columns.
