Modelling Dependency Structures Produced by the Introduction of a Flipped Classroom

Teaching processes have been changing in the lasts few decades from a traditional lecture-example-homework format to more active strategies to engage the students in the learning process. One of the most popular methodologies is the flipped classroom, where traditional structure of the course is turned over by moving out of the classroom, most basic knowledge acquisition. However, due to the workload involved in this kind of methodology, an objective analysis of the results should be carried out to assess whether the lecturer’s workload is worth the effort or not. In this paper, we compare the results obtained from two different methodologies: traditional lecturing and flipped classroom methodology, in terms of some performance indicators and an attitudinal survey, in an introductory statistics course for engineering students. Finally, we analysed the changes in the relationships among variables of interest when the traditional teaching was moved to a flipped classroom by using Bayesian networks

Different effects of adding white noise on cognitive performance of sub-, normal and super-attentive school children

Objectives: Noise often has detrimental effects on performance. However, because of the phenomenon of stochastic resonance (SR), auditory white noise (WN) can alter the "signal to noise'' ratio and improve performance. The Moderate Brain Arousal (MBA) model postulates different levels of internal "neural noise'' in individuals with different attentional capacities. This in turn determines the particular WN level most beneficial in each individual case-with one level of WN facilitating poor attenders but hindering super-attentive children. The objective of the present study is to find out if added WN affects cognitive performance differently in children that differ in attention ability. Methods: Participants were teacher-rated super-(N = 25); normal-(N = 29) and sub-attentive (N = 36) children (aged 8 to 10 years). Two non-executive function (EF) tasks (a verbal episodic recall task and a delayed verbal recognition task) and two EF tasks (a visuo-spatial working memory test and a Go-NoGo task) were performed under three WN levels. The non-WN condition was only used to control for potential differences in background noise in the group testing situations. Results: There were different effects of WN on performance in the three groups-adding moderate WN worsened the performance of super-attentive children for both task types and improved EF performance in sub-attentive children. The normal-attentive children's performance was unaffected by WN exposure. The shift from moderate to high levels of WN had little further effect on performance in any group. Significance: The predicted differential effect of WN on performance was confirmed. However, the failure to find evidence for an inverted U function challenges current theories. Alternative explanations are discussed. We propose that WN therapy should be further investigated as a possible non-pharmacological treatment for inattention

Redressing the balance: inverted hierarchies in the tourism classroom

The research evaluates a collaborative case study to co-create the curriculum for a tourism undergraduate module. In three course design team (CDT) meetings, students selected and discussed topics and learning styles. Qualitative analysis revealed that the students involved strove to be independent learners. They favoured active learning styles and ‘non-vocational’ aspects of tourism. However, university bureaucracy represents a block in the design process. The paper concludes by advocating a more equal relationship between students and tutors. This involves a shift in power relations, inverting traditional hierarchies in which teachers act as gatekeepers of knowledge and students are passive recipients

The Potential of Learned Index Structures for Index Compression

Inverted indexes are vital in providing fast key-word-based search. For every term in the document collection, a list of identifiers of documents in which the term appears is stored, along with auxiliary information such as term frequency, and position offsets. While very effective, inverted indexes have large memory requirements for web-sized collections. Recently, the concept of learned index structures was introduced, where machine learned models replace common index structures such as B-tree-indexes, hash-indexes, and bloom-filters. These learned index structures require less memory, and can be computationally much faster than their traditional counterparts. In this paper, we consider whether such models may be applied to conjunctive Boolean querying. First, we investigate how a learned model can replace document postings of an inverted index, and then evaluate the compromises such an approach might have. Second, we evaluate the potential gains that can be achieved in terms of memory requirements. Our work shows that learned models have great potential in inverted indexing, and this direction seems to be a promising area for future research.Comment: Will appear in the proceedings of ADCS'1

How to Prevent Your Flip from Flopping: Five Key Mistakes to Avoid When Switching to the Flipped Classroom Model

Contrary to popular perception, successfully adopting the flipped (or inverted) classroom model requires more than just recording videos of lectures for students to watch outside of class. This poster will highlight five key mistakes that teachers sometimes make when adopting the flipped classroom model, and outlines effective strategies to avoid them

Aplicación de la clase invertida en la educación superior: introducción a las nuevas tecnologías

Las autoras de este trabajo llevamos varios años trabajando con videos docentes para la enseñanza de las matemáticas dentro de la Economía a nivel universitario. Esto ha sido motivado por el auge de las nuevas tecnologías y las posibilidades docentes que nos proporcionan. La experiencia que teníamos en asignaturas virtuales nos ha permitido dar un paso más y utilizar los videos docentes en las clases presenciales. Si bien empezamos utilizándolos a modo de complemento, cuando conocimos la metodología de la flipped classroom (o clase invertida) nos planteamos una nueva forma de enseñanza. Decidimos invertir los papeles, de forma que el alumno, en vez de escuchar en clase y estudiar en casa, toma el papel protagonista, estudiando en casa con ayuda de videos y material proporcionado por el profesor y aprovecha el tiempo de clase para resolver ejercicios, plantear dudas y trabajar en equipo. Si bien esta metodología ha sido llevada a cabo con éxito en diversos niveles educativos, en el caso universitario no se conocen muchas experiencias. En nuestro caso hemos tenido que adaptarla, incorporando elementos adicionales, como el uso del programa Socrative para conseguir una mayor retroalimentación del aprendizaje del alumno. En el presente trabajo mostramos la experiencia que hemos llevado a cabo en el curso académico actual y recogemos la opinión de ambas partes, alumnos y profesores.Universidad de Málag

Cycloidal Paths in Physics

A popular classroom demonstration is to draw a cycloid on a blackboard with a piece of chalk inserted through a hole at a point P with radius r = R from the center of a wood disk of radius R that is rolling without slipping along the chalk tray of the blackboard. Here the parametric equations versus time are derived for the path of P from the superposition of the translational motion of the center of mass (cm) of the disk and the rotational motion of P about this cm for r = R (cycloid), r R (prolate cycloid). It is further shown that the path of P is still a cycloidal function for rolling with frictionless slipping, but where the time dependence of the sinusoidal Cartesian coordinates of the position of P is modified. In a similar way the parametric equations versus time for the orbit with respect to a star of a moon in a circular orbit about a planet that is in a circular orbit about a star are derived, where the orbits are coplanar. Finally, the general parametric equations versus time for the path of the magnetization vector during undamped electron-spin resonance are found, which show that cycloidal paths can occur under certain conditions.Comment: 9 pages, 10 figure

A Flipped Classroom Redesign in General Chemistry

The flipped classroom continues to attract significant attention in higher education. Building upon our recent parallel controlled study of the flipped classroom in a second-term general chemistry course (J. Chem. Educ., 2016, 93, 13–23), here we report on a redesign of the flipped course aimed at scaling up total enrollment while keeping discussion sizes small (i.e.,students), and maintaining equivalent contact hour load for faculty and workload for students. To that end, the course format featured lecture contact pushed outside of the classroom in the form of video lectures (mean duration 13 minutes) paired with online homework sets, and three parallel weekly one-hour discussion sections were held in adjoining lab rooms immediately prior to the three-hour laboratory session. As in our previous design, the discussion sections were led by teaching assistants; however, the weekly discussion meeting was shortened from 75 minutes to 50 minutes, and the primary instructor “floated” between the three parallel sessions. Two such sessions were held each week, affording a possible enrollment of 144; initial enrollment was 141, with students self-selecting into the course. We examine student performance in and satisfaction with the course using: (1) a pre-test/post-test design based on the paired questions American Chemical Society (ACS) first-term and second-term exams, (2) data on DFW (D, F, withdrawal) rates, and (3) student evaluations