00452nam a2200121Ia 4500008004100000100002000041245008400061245001900145260000900164300003100173440003000204650009600234171207s9999    xx            000 0 und d  aAagaard, Jesper  aBreaking down barriers: The ambivalent nature of technologies in the classroom   cJesper Aagaard  c2017  apages 1127-1143, July 2017  aNew Media & Societyv19:7  aAttention, classroom, connectivity, distraction, education, spatial imaginaries, technology