The power of refutational text: changing intuitions about the interpretation of box plots

European Journal of Psychology of Education - Graphicacy is an important skill in today’s society; however, the interpretation of graphs proofs to be more difficult than it might seem. In...     

The Work of the International Electrotechnical Commission

The IEC has a large number of technical committees and sub-committees working in the fields of electrical, electronic and radio engineering. Many of these committees are doing work which is relevant to educational technology. However, in many cases only a small part of their work is of interest to us. Because most of the work which is relevant to educational technology is in the field of interest of IEC TC60, a special sub-committee under TC60 was established for education.     

Perception,imagery, visualization and engineering graphics

We have conducted action research involving an instructional intervention over a 20-year period. This has demonstrated that spatial ability influences academic performance in engineering, and can be increased through instruction focused on using perception and mental imagery in three-dimensional representation. Prior to our intervention, the first-year engineering graphics course at our university had a failure rate of 36% for all engineering students and failure rates of 80% for African students studying at our university. Similar high failure rates were reported in engineering drawing and design courses at other Southern African universities, and similar association between low scores on tests of spatial ability and academic performance, suggesting that the problem was one encountered by many engineering students, not just by students at our university. Over the initial 2 years of the intervention, pass rates for the first-year engineering graphics course increased from 64 to 76%. With further changes in teaching, and the training of senior students as tutors to support the lecturing and practical activities provided in the course, the pass rates have risen to 88% annually, over a period in which the composition of the first-year student has become increasingly diverse, with greater numbers of students entering the university from disadvantaged educational backgrounds. The instructional model we have used is based on Piagetian principles, and confirms Piaget's theories with respect to the trainability of spatial ability in adulthood. Our findings suggest the importance of early identification of students with difficulty, as well as the potential value of an intervention aimed at training the processes involved in visualization through three-dimensional modelling and representation of objects. While spatial ability appears to be trainable through the methods we have developed, our research also indicates that level of spatial ability at time of intake to university is an important influence on academic performance, suggesting the value of instruction in visualization and three-dimensional representation at school level. Social factors are also important influences on academic performance, suggesting the value of tutorial-based interventions aimed at improving spatial ability in those university and technikon courses for which visualization and three-dimensional representation are a requirement.     

Various ways to determine rational number size: an exploration across primary and secondary education

European Journal of Psychology of Education - Understanding rational numbers is a complex task for primary and secondary school students. Previous research has shown that a possible reason is...     

Reading Comprehension of Dutch Deaf Children

In this study, the reading comprehension of deaf children and adolescents in the Netherlands is examined along with their word identification. The reading comprehension of 464 deaf students and the word identification of 504 deaf students between 6 and 20 years of age was examined. The results show the reading comprehension scores of deaf children to be far below the scores of hearing children. On average, the deaf subjects scored at a level equivalent to a hearing child in the first grade. The word identification scores of the deaf children, however, were almost equivalent to the scores of hearing children. Although reading comprehension and word identification appear to be related, this relation does not completely explain the comprehension difficulties encountered by deaf children. Additional factors are required to explain deaf children’s difficulties with reading comprehension.     

Measuring perceived social presence in distributed learning groups

Social presence—the degree to which ‘the other’ in a communication appears to be a ‘real’ person—has captured the attention of those dealing with learning in groups through computer-supported collaborative learning environments. The concept is important because it affects participation and social interaction, both necessary for effective collaboration and knowledge construction. This article reports on the construction and validation of a self-reporting (Dutch-language) Social Presence Scale to determine perceived social presence in distributed learning groups using computer-supported collaborative learning environments. The result is a one-dimensional scale consisting of five items with an internal consistency of .81. We used a nomological network of similar constructs for further validation. The findings suggest that the Social Presence Scale has potential to be useful as a measure for social presence.     

Word stress production in three‐year‐old children at risk of dyslexia

We investigated Dutch word stress acquisition in 3‐year‐old children at risk of dyslexia (children with at least one parent or older sibling with reading difficulties) and normally developing children, in order to shed light on language acquisition delays in children at risk of dyslexia, as well as to investigate further phonological deficits in dyslexia. The children had to repeat non‐words with stress patterns varying in regularity. Both the at‐risk and control children performed better on imitation of regular stress targets and worse on irregular and prohibited stress patterns. However, the at‐risk children showed more difficulty imitating irregular and prohibited patterns, and had lower percentages phonemes correct than the control group. The results can be interpreted as a delay in word stress acquisition in the at‐risk group. The findings thus point towards a phonological deficit early in language development.     

On strategies of educational innovation: Between substitution and transformation

The innovation of education seems to beself-evident. Boosted by a wide range of newtechnologies, educational institutes all overthe world are innovating their educationalsystems, in order to extend their services, toimprove their performances or to reduce costs.The apparent self-evidence of educationalinnovation hardly prompts the educational staffto reflect on the very idea of innovation andits consequences. This paper treats the basicprinciples that support the phenomenon oftechnology-induced educational innovation. Itaims to contribute to a better insight andunderstanding of its implications to anyoneengaged in education. It also aims to effect agrowing awareness of the premises on technologyand to support the right attitude to realiseimprovements in practice. The paper goes intostrategies of change, while discussing bothsubstitutional and transformational strategies.It explains its supposed differences byreferring to the philosophical frameworks ofJaspers, Heidegger and Borgmann. Starting fromBorgmann's ``devices paradigm', four principlesfor educational innovations are formulated,referring to the transparency and interactivityof educational technologies, the socio-culturalsignificance of products, the importance ofvalues beyond efficiency and the political biasinvolved with technological innovation.