“…The first example relates to the following research question: "What is the potential of mathematical problems, with or without a connection to reality, to trigger students' task-specific interest in problem solving?" In describing this example, we draw primarily on work by Schukajlow and colleagues (Rellensmann & Schukajlow, 2017;Schukajlow, Leiss, Pekrun, Blum, Müller, & Messner, 2012) who distinguished between two broad categories of problems: those with a connection to reality, called "realworld problems," and those without such a connection to reality, called "intra-mathematical problems." Although there are sub-categories within each of these categories of problems, real-world problems are often used in curriculum materials for the purpose of triggering student interest (Meyer, Dekker, & Querelle, 2001).…”