Understanding Mental Models of Dilution in Thai Students

Ninna Jansoon,

Richard K. Coll,

Ekasith Somsook

Опубликована Апрель 10, 2009

The purpose of this study was to investigate Thai students’ understanding of dilution and related concepts. The literature suggests that a complete understanding of chemistry concepts such as dilution entails understanding of and the ability to integrate mental models across three levels of representation: the macroscopic, sub-microscopic and symbolic. In this work students’ understanding was probed using the interview about events (IAE) approach employing open-ended questions, and also by analysis of student descriptions, and drawings. The research findings suggest that all students were able to answer openended questions related to dilution and related concepts. Less able students presented representations at …

Teacher Candidates’ Perception Level of Environmental Pollutant and Their Risk Factors

Fulya Oztas,

Erkan Kalıpçı

Опубликована Апрель 10, 2009

It is generally accepted that the environmental education deals with a wide range of environmental experiences, methods and processes. Teaching the subject of the environment should not be considered as an easy task. It should not only cover pure ecology education; but also include the citizenship responsibilities and the problems that are sourced from other interdisciplinary factors. Therefore teachers should have the responsibility to facilitate environmental issues. Hitherto no researcher has undertaken a comprehensive study that focuses on environmental education in teacher training programs. This study aims to detect basic environmental knowledge of Turkish teacher candidate at the onset of …

Climate of Concern - A Search for Effective Strategies for Teaching Children about Global Warming

Fiona Taber,

Neil Taylor

Опубликована Апрель 10, 2009

Recent research suggests that the issue of global warming is one of great concern for Australian children. This point to the need for effective teaching about this issue. Children should be properly informed about actions that help reduce carbon emissions as this may give them a sense of empowerment and go some way to alleviating concerns. This study followed the development in the knowledge of global warming of 29 primary school students in year 6 (the final year of primary) from two regional Australian schools over one school term. A hands-on science unit dealing specifically with global warming was prepared …

Evaluation of a Course: “Education and Awareness for Sustainability”

Mehmet Erdogan,

Gaye Tuncer

Опубликована Апрель 10, 2009

This article reported and discussed the evaluation of a lecture, designed to change university students’ values related with sustainable ways of living. The outcomes of the study were those obtained from the evaluation of the course titled “Education and Awareness for Sustainability”, which has been offered for three years in the Department of Elementary Education, Middle East Technical University–Ankara (Turkey). The study was realized with the participation of 85 students from different faculties (faculty of education, economy, administration and engineering). The study comprised three steps: need assessment (NA), formative evaluation (FE) and summative evaluation (SE). The evaluation model of DIPO …

Correlations of Students’ Grades, Expectations, Epistemological Beliefs and Demographics in a Problem-Based Introductory Physics Course

Mehmet Sahin

Опубликована Апрель 10, 2009

The purpose of this study was to determine the predictors of student grades in introductory physics courses utilizing problem-based learning (PBL) approach and traditional lecturing. The study employed correlational/predictive methods to investigate and describe/explain relationships of students’ physics grades with their expectations, attitudes, epistemological beliefs about physics and physics learning, and demographic variables. The subjects involved in this study were 264 freshmen engineering students (PBL, n = 100; traditional, n = 164) at Dokuz Eylül University (DEU) in Izmir, Turkey. All students were surveyed at the beginning and at the end of the spring 2007 semester using the Maryland Physics …