Management Summary Litter is a social and environmental problem with undesirable consequences. Facility managers and cleaning companies of universities of applied sciences, consider indoor litter as a hot topic. Universities should take the litter issue serious. Less litter could contribute to cost …

Pupils with problem behaviours are challenging teachers as well as they are a challenge to teachers to find a way to teach them what curricula prescribe. Especially middle school teachers and those working in schools for special education are con-fronted with pupils with behavioural problems. There, …

There is a central dilemma embedded in the relationship between teachers and researchers. Teachers know the story of the classroom well, but they are seldom asked to tell their stories, nor do they usually have the opportunity. Researchers, on the other hand, are skilled at telling certain things about …