Stock Photo - 28 November 2018, Berlin, Neustrelitz: A student at the Carolinum grammar school calculates an equation with an iPad in math class. Photo: Britta Pedersen/dpa-Zentralbild/ZB. - Neustrelitz/Berlin/Germany

Stock Photo: 28 November 2018, Berlin, Neustrelitz: A student at the Carolinum grammar school calculates an equation with an iPad in math class.

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