Search results for "Computer based"
showing 10 items of 24 documents
A computer-based diagnostic tutor for average velocity
1991
Abstract The concept of average velocity is often misunderstood, even by students at university level. To analyse student reasoning about average velocity, students who were being instructed in kinematics in an introductory physics course were shown a series of computer animations of two cars moving independently. Their answers to subsequent questions tended to use partial knowledge elements present in the problem. On this basis, a list of eight procedures used by students was drawn up and used as the basis of a computer-based diagnostic tutor, Velo. The performance of Velo is being compared with human tutors.
Teaching Inorganic Photophysics and Photochemistry with Three Ruthenium(II) Polypyridyl Complexes: A Computer-Based Exercise
2015
Among computational methods, DFT (density functional theory) and TD-DFT (time-dependent DFT) are widely used in research to describe, inter alia, the optical properties of transition metal complexes. Inorganic/physical chemistry courses for undergraduate students treat such methods, but quite often only from the theoretical point of view. In the calculation exercise herein described, students are guided step by step through the computational study of the photophysics and photochemistry of polypyridyl Ru(II) d6-metal complexes. In particular, by means of DFT and TD-DFT calculations, they are asked to examine and interpret a set of experimental data describing the absorption, emission, and ph…
Kielitutkinto porttina Suomeen ja astinkivenä suomen kieleen
2017
Artikkelissa tarkastellaan inkerilaisten paluumuuttajien kasityksia kielitutkinnosta, joka heidan oli suoritettava saadakseen oleskeluluvan Suomeen niin sanotulla inkerilaisstatuksella. Kielitutkinto oli kaytossa vuosina 2003–2016. Tarkastelun kohteena ovat myos taman kielitutkinnon vaikutukset kielenopiskeluun. Aineistona ovat paluumuuttovalmennukseen osallistuneiden, tutkintoon valmistautuneiden henkiloiden (n = 97) vastaukset kyselyyn, jonka he tekivat ennen kielitutkinnon suorittamista. Aineistoa tarkastellaan sisallonanalyysin keinoin. Aineiston perusteella kielenoppijat tiesivat tutkinnon rakenteesta ja sen suorittamisesta tietokoneella. Suorittajat olivat hyvin tietoisia myos siita, …
Accelerating decoding-related skills in poor readers learning a foreign language: a computer-based intervention
2013
The results of Fast ForWord® training on English decoding-related skills were examined. Finnish fifth-grade students were identified as having reading fluency problems and poor skills in English as a foreign language learned at school and were randomly assigned to either a training group (TRG) or a control group. The TRG (n = 13) received 50 min of daily computer program-based training for a period of approximately 10 weeks. Students in the first control group (n = 11) received the school’s regular instructional programme. A second control group was composed of 14 average readers. The students’ English skills were examined in pre-test, post-test and follow-up measurements. The TRG students …
MODELLING THE DISPERSION PROPERTIES OF MASS LINEAR CHAINS: EXPERIMENTS AND SIMULATIONS
2009
We analyze and discuss the results of an experiment with the goal of revealing the phonon-like acoustic dispersion curve. The experimental apparatus consists of a sonometer and an electromagnetic driver connected to a signal generator in order to establish standing waves along a stretched metal string (a guitar string) upon which a set of beads (used normally for fishing) has been fixed. The oscillation amplitude is measured by means of a detector connected to an MBL interface. We detect the resonance frequencies as function of the wave-number and obtain the corresponding dispersion curve. The results show that deviations from linearity occur when the wavelength is comparable with the dista…
A comparison between paper and pencil and computer based assessment
2015
International audience; In this study, we describe two tools designed for comparing paper and computer assessment modalities: a " comparison table " to control migratory process from paper to computer modality and vice versa and a " grid for observation of students " to codify students' behaviours in solving process.
A study of capillarity phenomena by using a computer-based simulation approach
2021
Liquid properties are relevant for the understanding of fundamental and applied sciences. Among these properties, those that can be traced back and explained through the surface tension are particularly interesting to study and reconstruct in educational terms. Traditional educational treatment of surface tension is often obscure or too complex, sometimes superficial or completely neglected. The aim of the research here described is to discuss in detail a mesoscopic model of liquids and show quantitative results obtained by a computer simulation approach. Looking at the educational aspect, the main advantage of this approach is that it allows the student/teacher to control the simulation pa…
Selection Task and Computer-Based Feedback to Improve the Searching Process in Task-Oriented Reading Situations
2015
Adaptive feedback has showed to be effective to enhance strategic reading behaviors and performance in task-oriented reading situations, but it is difficult to be implemented in classroom environments. Computer-based systems allow overcoming these challenges. We conducted an experiment in which secondary-school students read two texts, answered comprehension questions and selected relevant text information while receiving automatic feedback about selection accuracy and performance. Two experimental conditions were designed to assess the effects of feedback and selection attempts. Then, students perform a transfer task without any of these elements. We found that one-attempt and two-attempt …
The Boltzmann factor through experiments and simulations
2009
The Boltzmann factor is at the basis of a great amount of thermodynamic and statistical physics, both classical and quantum. It describes the behaviour of natural systems that are exchanging energy with the environment. However, why does the expression have this specific form? The Feynman Lectures on Physics justifies it heuristically by reference to the “exponential atmosphere” example. Thermodynamics textbooks usually give a more or less complete explanation that mainly involves the mathematical analysis, where it is hard to see the logic flow. Moreover, the necessary mathematics is not at the level of high school or college students’ preparation. Here we present an experiments and a simu…
Cuatro años de la versión computerizada del Examen de Inglés como segunda lengua (TOEFL)
2009
Este artículo trata señalar las dificultades a las que se enfrentan los candidatos cuando realizan el examen de inglés como lengua extranjera (TOEFL) basado en Internet. El objetivo es doble: por un lado ver cómo se puede sugerir cómo evitar problemas similares en plataformas que ya se están diseñando en España (Proyecto PAULEX, MEC HUM2007-66479-C02-01/FILO) y, por otro, poner de relieve el tipo de preparación que necesitan los estudiantes que realicen este examen para poder superar ciertos problemas estratégicos que actualmente encuentran dichos candidatos.