Cognitive development in relation to secondary school final examination results in the Italian school system

A Piaget‐type questionnaire was presented to about 800 students of the Science Faculty of Bari University at the very beginning of their first academic year. The score results of the questionnaire were analysed in terms of cognitive development and correlated with the grade obtained in the final examination at secondary school. The correlation (when statistically significant) were always positive but low. This suggests that more attention should be paid in the final examination to students’ master of high‐level cognitive processes.     

Identifying Multiple Levels of Discussion-Based Teaching Strategies for Constructing Scientific Models

This study sought to identify specific types of discussion-based strategies that two successful high school physics teachers using a model-based approach utilized in attempting to foster students' construction of explanatory models for scientific concepts. We found evidence that, in addition to previously documented dialogical strategies that teachers utilize to engage students in effectively communicating their scientific ideas in class, there is a second level of more cognitively focused model-construction-supporting strategies that these teachers utilized in attempting to foster students' learning. A further distinction between macro and micro strategy levels within the set of cognitive strategies is proposed. The relationships between the resulting three levels of strategies are portrayed in a diagramming system that tracks discussions over time. The study attempts to contribute to a clearer understanding of how discussion-leading strategies may be used to scaffold the development of conceptual understanding.     

In Search of Meaningful Integration: The experiences of developing integrated science curricula in junior secondary schools in China

This paper is about the process of developing integrated science curricula at junior secondary schools in the Peoples’ Republic of China in the past 20 years. The history has witnessed two stages of developing integrated science curricula during this period in China: one was at the provincial level in the 1980s/1990s, while the other was at the national level in the new millennium. Using the concept of curriculum emphases, this paper purported to investigate the advocated forms of integration and the reasons and causes behind them in integrated science curriculum during the period under study. Data were collected from two sources: curriculum documents related to the integrated science curricula, and interviews with key informants who were involved in designing the official documents of this kind of science curriculum. Two models of integration have been identified from the two stages respectively: one is ‘integration within science subjects’, while the other ‘integration beyond science subjects’. The social–political roots of the two models of integration have been traced. To meet the goal of scientific literacy, it is suggested in the final part of this paper that the model of ‘integration within science subjects’ should be abandoned while the model of ‘integration beyond science subjects’ should be advocated in the process of developing integrated science curriculum.     

Understanding the Greenhouse Effect by Embodiment – Analysing and Using Students' and Scientists' Conceptual Resources

Over the last 20 years, science education studies have reported that there are very different understandings among students of science regarding the key aspects of climate change. We used the cognitive linguistic framework of experientialism to shed new light on this valuable pool of studies to identify the conceptual resources of understanding climate change. In our study, we interviewed 35 secondary school students on their understanding of the greenhouse effect and analysed the conceptions of climate scientists as drawn from textbooks and research reports. We analysed all data by metaphor analysis and qualitative content analysis to gain insight into students' and scientists' resources for understanding. In our analysis, we found that students and scientists refer to the same schemata to understand the greenhouse effect. We categorised their conceptions into three different principles the conceptions are based on: warming by more input, warming by less output, and warming by a new equilibrium. By interrelating students' and scientists' conceptions, we identified the students' learning demand: First, our students were afforded with experiences regarding the interactions of electromagnetic radiation and CO₂. Second, our students reflected about the experience-based schemata they use as source domains for metaphorical understanding of the greenhouse effect. By uncovering the—mostly unconscious—deployed schemata, we gave students access to their source domains. We implemented these teaching guidelines in interventions and evaluated them in teaching experiments to develop evidence-based and theory-guided learning activities on the greenhouse effect.     

The Effect of Integrating Aesthetic Understanding in Reflective Inquiry Activities

The purpose of this study was to explore the effectiveness of integrating aesthetic understanding in reflective inquiry activities. Three typical classes of Taiwanese eighth graders (n = 106) and nine additional low‐achieving students in the same school participated in the study. The treatment for experimental students emphasized scaffolding aesthetic understanding and reflections on inquiry strategies. It was found that the experimental group students consistently outperformed their counterparts on the post‐test and the delayed post‐test in conceptual understanding and application of science knowledge. In addition, the low‐achieving students were motivated by the treatment and made significant progress on the two tests. The results of interview and classroom observation also revealed that the intervention made a difference in students’ affective perceptions.     

Engineering Design and Conceptual Change in Science: Addressing thermal energy and heat transfer in eighth grade

The purpose of this research was to investigate the impact of engineering design classroom activities on middle‐school students’ conceptions of heat transfer and thermal energy. One eighth‐grade physical science teacher and the students in three of her classes participated in this mixed‐methods investigation. One class served as the control receiving the teacher’s typical instruction. Students in a second class had the same learning objectives, but were taught science through an engineering design curriculum that included demonstrations targeting specific alternative conceptions about heat transfer and thermal energy. A third class also used the engineering design curriculum, but students experienced typical demonstrations instead of targeted ones. Conceptual understandings of heat transfer and thermal energy and attitudes towards engineering were assessed prior to and after the interventions through interviews, observations, artefact analysis, a multiple choice assessment, and a Likert scale assessment. Results indicated that the engineering design curriculum with targeted demonstrations was significantly more effective in eliciting desired conceptual change than the typical instruction and also significantly more effective than the engineering curriculum without targeted demonstrations. Implications from this study can inform how teachers should be prepared to use engineering design activities in science classrooms for conceptual change.     

Chinese and Australian Year 3 Children's Conceptual Understanding of Science: A multiple comparative case study

Children have formal science instruction from kindergarten in Australia and from Year 3 in China. The purpose of this research was to explore the impact that different approaches to primary science curricula in China and Australia have on children's conceptual understanding of science. Participants were Year 3 children from three schools of high, medium and low socio-economic status in Hunan Province, central south China (n?=?135) and three schools of similar socio-economic status in Western Australia (n?=?120). The students' understanding was assessed by a science quiz, developed from past Trends in Mathematics and Science Study science released items for primary children. In-depth interviews were carried out to further explore children's conceptual understanding of living things, the Earth and floating and sinking. The results revealed that Year 3 children from schools of similar socio-economic status in the two countries had similar conceptual understandings of life science, earth science and physical science. Further, in both countries, the higher the socio-economic status of the school, the better the students performed on the science quiz and in interviews. Some idiosyncratic strengths and weaknesses were observed, for example, Chinese Year 3 children showed relative strength in classification of living things, and Australian Year 3 children demonstrated better understanding of floating and sinking, but children in both countries were weak in applying and reasoning with complex concepts in the domain of earth science. The results raise questions about the value of providing a science curriculum in early childhood if it does not make any difference to students' conceptual understanding of science.     

Is it the Earth that turns or the Sun that goes behind the mountains? Students’ misconceptions about the day/night cycle after reading a science text

ABSTRACT

The present research tested the hypothesis that the reading of science text can create new misconceptions in students with incongruent prior knowledge, and that these new misconceptions will be similar to the fragmented and synthetic conceptions obtained in prior developmental research. Ninety-nine third- and fifth-grade children read and recalled one of two texts that provided scientific or phenomenal explanations of the day/night cycle. All the participants gave explanations of the phenomenon in question prior to reading one of the texts and after they read it. The results showed that the participants who provided explanations of the day/night cycle at pretest incongruent with the scientific explanation recalled less information and generated more invalid inferences. An analysis of the participants’ posttest explanations indicated that these readers formed new misconceptions similar to the fragmented and synthetic conceptions obtained in developmental research. The implications of the above for text comprehension and science education research are discussed.