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:
© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.
A 5-page 12-hour and 24-hour time pack for 3rd and 4th grade. Learn the 24-hour clock with a clock face that shows 13 to 23 and 00 around the outside and finish a conversion table, change sixteen a.m. and p.m. times to 24-hour time and sixteen 24-hour times back to 12-hour time, read analog clocks with a clue like late at night and write each time both ways, and answer questions about a train timetable in 24-hour time. Answer keys included.
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