Accurately modeling individual students' knowledge growth is important in many applications of learning analytics. A key step is to decompose the knowledge targeted in the instruction into detailed knowledge components (KCs). We search for an accurate KC model for basic equation solving skills, using data from an intelligent tutoring system (ITS),…

Age-period-cohort (APC) models are designed to estimate the independent effects of age, time periods, and cohort membership. However, APC models suffer from an identification problem: There are no unique estimates of the independent effects that fit the data best because of the exact linear dependency among age, period, and cohort. Among methods…

It is not typically the bent of infrastructure to be continually responsive in a way that is expansive and inclusive; instead, for newcomers or those with alternative histories, aims, vision, values, and perspectives, the inertia of infrastructure is more likely to be experienced as infrastructural breakdowns. We ask: "What might wisdom look…

This paper is concerned with organizational principles of a pool of familiar problems of expert problem posers and the ways by which they are utilized for creating new problems. The presented case of Leo is part of a multiple-case study with expert problem posers for mathematics competitions. We present and inductively analyze the data collected…

The purpose of this paper is to provide issues related to student understanding of logical components that arise when solving word problems. We designed a logic problem called the King and Prisoner Puzzle--a linguistically simple, yet logically challenging problem. In this paper, we describe various student solutions to the puzzle and discuss the…

This research highlights the critical role of gender in the context of problem talk and social support in adolescents' friendships. Early- and middle-adolescents' (N = 314 friend dyads; Ms = 13.01 and 16.03 years) conversations about problems were studied using observation and a short-term longitudinal design. Mean-level gender differences emerged…

This article addresses a significant problem with transformative learning theory; namely, that it is increasingly being used to refer to almost any instance of learning. This article offers several points of clarity to resolve this problem. First, it portrays a subtle but important evolution in the way the theory has been used in the literature…

In this article we examine a turn construction ("oh"+apology+solution) that speakers use to deal with the concomitant presence of a possible offense and a problem-to-be-solved in the immediately preceding interactional environment. We show that speakers collaborate in differentiating the offense aspect and the problem aspect of an…

People identify apologies as unique types of actions as compared with kin-related moves, which remedy troubles or offenses, such as excuses and justifications (Goffman, 1971; Owen, 1983; Olshtain & Cohen, 1983; Sbisa, 1999). A feature of these apologies is the speaker's acknowledgment of personal responsibility for having caused trouble or…

The subject of the article is the legal status of individuals serving custodial sentences. Special emphasis is laid on the legal status of individuals serving sentences for multiple offences. The soviet state directed substantial public resources to maintenance of basic human conditions in prisons. Now the Russian Federation, which embarked on a…

The authors examine how the profession's adaptation to Flexner's criteria influences the emergence of the neomedical model as the majoritarian paradigm within social work even in the face of a pluralism manifest by the existence of other competing paradigms. One endorses empowerment in social work, and the other embraces societal transformation in…

Teacher John Hayward believes no classroom can advance far academically unless the teacher has first guided the class to become a community. With a focus on the first days and weeks of school, the author shares strategies any teacher can use to help everyone in the room learn about one another and to show students that he or she will be a…

In today's society, education institutions must strive to develop graduates that are capable of facing the challenges they seek, and who are adaptable to the changes they will encounter post-graduation. Inherently, both institutions and educators must contain and exhibit these same attributes. Developing learners with high-level capabilities…

Previous research has demonstrated the utility of using lag schedules of reinforcement to increase response variability of children with autism. However, little research has evaluated whether the lag schedule promotes variability from within an already-established repertoire or expands the current repertoire by promoting the use of new responses…

Positive behaviour support (PBS) has become well established as an intervention approach for individuals with intellectual disability and challenging behaviour. However, what remains unexplored is the relationship between PBS and the medical and social models of disability, which historically are the dominant conceptual frameworks put forward in…