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- Grade Range
- 9th - 12th
- Rating
Students engage in an overview of solar and lunar calendars, their history and lore. Also, of the day and the month, and their relations to the rotation period of the Earth and the orbital period of the Moon. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students research the Mayan number and calendar system. They translate a variety of math problems from base-10 Arabic numbers into a base-20 Mayan representation. They discuss current challenges faced by the people in today's Guatemala. Full Review »
- Grade Range
- 4th
- Rating
Students explore the Roman origins and evolution of our calendar. Full Review »
- Grade Range
- Kindergarten - 12th
- Rating
Students compare and contrast the physical and orbital characteristics of Mars and Earth. They discuss the history of time-keeping and calendars on Earth. In groups, they use the facts about Earth and Mars to design a Martian calendar. Full Review »
- Grade Range
- 5th - 10th
- Rating
Students investigate time, how people measure it, and how it influences our lives. They complete an online Webquest, analyze various calendars, answer discussion questions, and identify references to time in a newspaper article. Full Review »
- Grade Range
- 6th - 12th
- Rating
Students are introduced to the Mayan Long Count calendar system. They work in groups to calculate the date of their birth and use the calendar to determine important Mayan dates. Full Review »
- Grade Range
- 6th - 8th
- Rating
Students study the universality of many New Year celebrations. They present traditions associated with New Year celebrations and explain why New Year is at different times for different people. Full Review »
- Grade Range
- 6th - 9th
- Rating
Students examine the influence of interaction with other cultures and the environment in relation to calendars. They also look at the origins of the calendar we use every day. Full Review »
- Grade Range
- 3rd - 6th
- Rating
Students, after answering a variety of questions involving time expressed in different ways, draw a table to illustrate time in words as well as digits. In connection, they observe time on analogue watches and clock faces along with what "half" in time increments means. Full Review »
- Grade Range
- 6th - 8th
- Rating
Students study the difference between the Julian and Gregorian Calendars, the reasons for changing from one to the other, and other interesting facts about time and the calendar. They work in small groups to answer provided questions. Full Review »
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