Five pages on the two ways of writing a time. Page 1 is a 24-hour clock face, the hours 1 to 12 inside and 13 to 23 and 00 outside, with the rules beside it and a table of p.m. times to finish in both forms. Page 2 changes sixteen 12-hour times to 24-hour time, including noon, times just after midnight and midnight itself, and page 3 changes sixteen 24-hour times back. Page 4 has nine analog clocks, each with a clue such as in the morning or late at night, to write in 12-hour and 24-hour time. Page 5 is a train timetable with five trains and four stations, and six questions about it.
Begin with page 1 on the board: count around the inside of the clock for the morning and around the outside for the afternoon and evening. Show a bus, train or airport timetable from your town before page 5 and ask why travel times are written in 24-hour time (no mixing up a.m. and p.m.).
Many phones, ovens and car clocks can show 24-hour time. Switch one over for a day and ask your child to tell you the time in both ways.
This pack supports the following Common Core State Standards for Mathematics:
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Changing times between 12-hour time with a.m. or p.m. and 24-hour time, noon and midnight included. Students learn a 24-hour clock face, change times both ways, read clocks with clues and use a train timetable.
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