This study examined the learning trajectory of five US humanities teachers when navigating learning to teach the difficult history of school desegregation within a context of a six-month inquiry-based professional development. The research questions were: What do teachers frame as problems when teaching difficult histories? How do they…

Recommender systems in educational contexts have proven effective to identify learning resources that fit the interests and needs of learners. Their usage has been of special interest in online self-learning scenarios to increase student retention and improve the learning experience. In current recommendation techniques, and in particular, in…