![](http://www.alamy.com/thumbs/6/46E8B685-BC18-4EEF-8C03-F48B3FD09B41/E193FT.jpg)
Eine Sch¸lerin hat eine Rechenaufgabe auf ein Strassenpflaster geschrieben.
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Photo credit: © McPhoto/Bilderbox / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: count, duty, education, exam, formula, general, high, higher, house, joke, joy, learn, mathematics, pavement, pias, pisa, plaster, politics, practice, practise, reform, school, school-leaving, schools, spare, street, study, system, time, trains