The Classroom Practice of a Prospective Secondary Biology Teacher and His Conceptions of the Nature of Science and of Teaching and Learning Science

We describe research carried out with a prospective secondary biology teacher, whom we shall call Miguel. The teacher’s conceptions of the nature of science and of learning and teaching science were analyzed and compared with his classroom practice when teaching science lessons. The data gathering procedures were interviews analyzed by means of cognitive maps and classroom observations. The results reflected Miguel’s relativist conceptions of the nature of science that were consistent with his constructivist orientation in learning and teaching. In the classroom, however, he followed a strategy of transmission of external knowledge based exclusively on teacher explanations, the students being regarded as mere passive receptors of that knowledge. Miguel’s classroom behavior was completely contrary to his conceptions, which were to reinforce the students’ alternative ideas through debate, and not by means of teacher explanation.     

Blind spot detection using vision for automotive applications

This paper describes a vision-based system for blind spot detection （BSD） in intelligent vehicle applications. A camera is mounted in the lateral mirror of a car with the intention of visually detecting cars that are located in the so-called blind spot and cannot be perceived by the vehicle driver. The detection of cars in the blind spot is carried out using computer vision techniques, based on optical flow and a double-stage data clustering technique for robust vehicle detection.     

Double your major,double your return?

We use the 2003 National Survey of College Graduates to provide the first estimates of the effect on earnings of having a double major. Overall, double majoring increases earnings by 2.3% relative to having a single major among college graduates without graduate degrees. Most of the gains from having a double major come from choosing fields across two different major categories. Graduates who combine an arts, humanities or social science major with a major in business, engineering, science or math have returns 7–50% higher than graduates with a single major in arts, humanities or social science. But such double major combinations have returns no higher than single majors in business, engineering, science or math. Majors combining business and science or math have returns more than 50% greater than the returns to having a single major in these fields.     

Going to action? A literature review on educational proposals in formal Environmental Education

The current state of the planet’s environmental deterioration calls for formal educational contexts to implement effective environmental proposals which nurture action competence. The aim of this paper is to examine the educational proposals in formal contexts that have been published in the two research journals of greatest impact on Environmental Education during the period 2008–2013, and to analyse how they contribute to the development of action competence. Special attention is paid to research (i) based on real participation by students; (ii) promotes reflection on the complexity of environmental issues; (iii) facilitates critical thinking; (iv) encourages autonomous and responsible decision-making and (v) involves communities. Our results show that these approaches can help improve the development of action-focused environmental education and bring to light a series of challenges for future research.     

Baroque Tower on a Gothic Base: A Lakatosian Reconstruction of Students' and Teachers' Understanding of Structure of the Atom

The main objective of this study is a reconstruction of students' and teachers' understanding of structure of the atom based on the following framework: a) history of science can be conceived as that of competing rival research programs; b) some of the greatest scientific research programs progressed on inconsistent foundations; c) in actual scientific practice, counter-examples would be considered as mere anomalies; d) work of Thomson, Rutherford and Bohr led to the postulation of atomic models based on competing frameworks of understanding. This study is based on 171 freshman students enrolled in General Chemistry I and 7 chemistry teachers at the Instituto Universitario de Tecnología, El Tigre, Venezuela. All the students and teachers were asked to respond to a 11 item questionnaire and explain their responses. The questionnaire was administered about a month after the students/teachers had finished the topic of atomic structure. Students' and teachers' responses were classified in the following categories: Positivist/inductivist, Transitional and Lakatosian. Results obtained show that students and teachers: a) have a very similar positivist understanding of the progress of science; b) are inconsistent in their responses by switching from a positivist response on one item to a Lakatosian on an another; c) also showed some consistent response patterns by resisting changes in some of their core beliefs by invoking "auxiliary hypotheses"; and d) consider that observable hard experimental facts give science its objective status, whereas the interpretations being subjective perhaps go beyond the fold of science.     

User's Approaches to Information Gathering and Processing

The paper explains how the engineer may process effectively the information flows coming to him from many sources. The contribution is a prerequisite for building personalised and field-oriented intelligent database mediators. The technique used is based on a particular attitude closed to the natural language structure and called the orientation semantics. According to this attitude, the natural text has an implicit faced structure recognisable by a metaknowledge processor. According to this technique the engineer may measure his knowledge enrichment.     

Salamanca 1994-2019: there is still a long way to Latin America

ABSTRACT

This article analyses the progresses and challenges in education in Latin America since the Salamanca World Conference on Special Needs Education. The main advances have been in the access to education of a greater number of students derived from a higher public expenditure. The challenges that still exist can be summed up through insufficient educational quality, especially with regard to the situation of teachers and the infrastructure of schools. It’s difficult to collect appropriate, rigorous and accurate data for special needs education. The article concludes by pointing out the importance of rebuilding three bridges to move faster in the inclusive process: first, a political bridge to agree on the improvement of the educational budget during the next decade; a social and cultural bridge that supports attitudes of citizens in favour of diversity and inclusion; and finally, an educational bridge with two fundamental pillars: education of infant and young children and training and professional development for teachers.     

Student Progress in Learning: Teacher Responsibility, Accountability, and Reality

Educator accountability for student progress in learning goes hand-in-hand with the social contract that assigns responsibility for education to schools. From this perspective accountability rests most heavily with teachers, since they are the most directly responsible for learning, but it extends to specialists, school administrators, and school board members as well. To accommodate the realities of classrooms, schools, families, and communities, however, the caveat is added that teacher accountability needs to be thought of as both conditional and collective. The implications of this view are discussed for teacher work, teaching as a profession, and the meaning of reasonable and defensible standards of performance when addressing the issue of educator accountability for student learning. Illustrative criteria of accountability are proposed, which the author believes to represent a realistic balance between the ethical obligations of a profession, the dependence of citizenry on these obligations being met, and the hard realities encountered in attempting to meet them.