We propose a randomized gradient method for the handling of a convex function whose gradient computation is demanding. The method bears a resemblance to the stochastic approximation family. But in contrast to stochastic ...

The Balance of Nature (BoN) metaphor leads to various naïve conceptions about ecosystem dynamics that do not address current scientific theories adequately. An appropriate alternative is the Flux of Nature (FoN) metaphor. ...

This paper addresses the question if and to which extent linguistic surface features of test items in a physics assessment affect item difficulty. In an experimental study, linguistic features of test items in physics were ...

Several emerging applications, such as “Analytics of Things" and “Integrative Analytics" call for a fusion of statistical learning (SL) and stochastic optimization (SO). The Learning Enabled Optimization paradigm fuses ...

Der Beitrag geht der Frage nach, inwiefern sich das spielbasierte Lernsetting des Welthandelsspiels (WHS) mit seinem auf ökonomische Profitmaximierung ausgerichteten Spielziel zur Anbahnung ethischen Urteilens im ...

Junglehrkräfte greifen in der Unterrichtspraxis häufig auf tradierte Handlungsroutinen zurück. Um diese zugunsten der universitären Lehrkräftebildung zu überwinden gilt es auf einer Metaebene über ihre Orientierungen im ...

This study examines the relationship between students’ general visual-spatial ability and their understanding of electricity and electromagnetism, a topic that requires imagining many invisible, 3-dimensional phenomena. ...

We constructed paper-and-pencil test-items to assess chemistry student teachers’ scientific inquiry competencies. We focused on the inquiry method experiment, divided into three reasoning steps (question & hypothesis; ...

In this paper, we bring together a well-established and often-studied instrument assessing students’ understanding about force and motion, the Force Concept Inventory (FCI), and a proposed description of how students ...

From primary school through university and beyond, textbooks are crucial for teaching and learning science. In most cases the content of the books is aligned with intended state curricula, and teachers in many countries ...