Es werden verschiedene Varianten betrachtet, objektorientierte Implementierungen für Binärbäume vorzunehmen. Dabei soll zum einen beleuchtet werden, wie Polymorphie benutzt werden kann, um Fallunterscheidungen zu vermeiden. Zum anderen soll untersucht werden, ob die Technik der Objektmutation...

In this paper we present a counterfactual evaluation of the effect of ICT resources at school on student achievements conducted in Italy. In 2009 156 classes at 6th grade were endowed with additional resources earmarked for purchasing ICT equipments only. By selecting an equivalent number of...

We investigate how inviting students to set task-based goals affects usage of an online learning platform and course performance. We design and implement a randomized field experiment in a large mandatory economics course with blended learning elements. The low-cost treatment induces students to...