File 1
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pdf Please login to download this file.Students build a sundial to measure time. They explain how a sundial works with sunlight. They tell the time using a sundial and compare the accuracy and precision of this method with modern ways of telling time.
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نویسنده
Audrey Korczynska
ګاش کوله
جواز/ دارنده حق چاپ
CC BY 4.0
