00358nam a2200109Ia 4500008004100000245010700041260003500148260000900183300000800192500002100200650002700221170224s9999    xx            000 0 und d  aAssessment of Engagement for Intelligent Educational Agents: A Pilot Study with Middle School Students  bComputers in Education Journal  c2014  a5:4  aOctober-December  xInformation Technology