This activity asks the student to determine the time in Cairo, Egypt, when it is 3:00 p.m. in San Francisco. It includes a map of the world with the time zones marked. The activity, part of the Figure This! collection of 80 math challenges emphasizing math in the real world, explains how to determine the time in different time zones and what the prime meridian and the international date line are. Students see how positive and negative numbers relate to the time zones and are asked to think about the Earth's rotation and daylight saving time. The activity page contains links to a solution hint, the solution, family activities, and to other math questions, such as why are the time zones each 15 degrees apart. Copyright 2005 Eisenhower National Clearinghouse


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Informal Education,Process skills,Middle School,NSDL,Grade 8,Measurement,oai:nsdl.org:2200/20120114184954062T,NSDL_SetSpec_1007936,Grade 6,Problem solving,Time,Mathematics,Education,Physics,Grade 7



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