Estimating Earth's Circumference with an App

Autor/inn/en	Cooper, Linda; Dennis, Emily
Titel	Estimating Earth's Circumference with an App
Quelle	In: Mathematics Teaching in the Middle School, 22 (2016) 1, S.47-50 (4 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1072-0839
Schlagwörter	Computation; Computer Oriented Programs; Telecommunications; Handheld Devices; Technology Uses in Education; Educational Technology; Middle School Students; Secondary School Mathematics; Measurement Techniques; Mathematical Concepts; Problem Solving; Mathematical Logic + Suchen Sie Ihr Suchwort? Computerprogramm; Telekommunikationstechnik; Technology enhanced learning; Technology aided learning; Technologieunterstütztes Lernen; Unterrichtsmedien; Middle school; Middle schools; Student; Students; Mittelschule; Mittelstufenschule; Schüler; Schülerin; Messtechnik; Problemlösen; Mathematical logics; Mathematische Logik
Abstract	More than 2,200 years ago, Eratosthenes, who was a Greek astronomer, geographer, and mathematician, used a simple proportion involving the distance between two ancient cities and measures of shadows cast in those cities during a summer solstice to estimate the circumference of Earth (Nicastro 2008, 25-28). Today, middle school students can use similar proportional reasoning with physical measurements easily collected by a smart phone and trundle wheel to duplicate the feat of estimating Earth's circumference. Within this hands-on discovery activity, students explore the seventh-grade Common Core standard to "analyze proportional relationships and use them to solve real-world and mathematical problems" (CCSSI 2010, p. 47) using popular technology and integrating concepts of latitude and longitude. (As Provided).
Anmerkungen	National Council of Teachers of Mathematics. 1906 Association Drive, Reston, VA 20191. Tel: 800-235-7566; Tel: 703-620-9840; Fax: 703-476-2570; e-mail: NCTM@nctm.org; Web site: http://www.nctm.org/publications/mathematics-teaching-in-the-middle-school/
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01