Measuring time: minutes and seconds
Find an arrival time, work out the time between two clocks with time arrows, and convert between seconds, minutes and hours.
- France: grade 3
- Germany: grade 2
- Iran: grade 4
- Russia: grade 3
Guide
minutes and second (time)s are the small units of time: 1 hour = 60 minutes and 1 minute = 60 seconds. So 3 minutes is 180 seconds.
To find an arrival time, move forward on the timeline with an arrow: first to the next whole hour, then the rest of the minutes. For 9:35 + 45 minutes: 25 minutes to 10:00 and 20 more makes 10:20.
To find a start time, draw the arrow backwards: first back to the whole hour before, then the rest of the minutes.
To find the time between two clocks, go from the first time to the next whole hour, then to the second time. Add the minutes of the two arrows.
Don't mix up hours and minutes: 1 hour 20 minutes is 60 + 20 = 80 minutes, not 120 or 21.