High school students' understanding of projectile motion concepts

The aim of this study was to investigate the effectiveness of conceptual change-based instruction and traditionally designed physics instruction on students' understanding of projectile motion concepts. Misconceptions related to projectile motion concepts were determined by related literature on this subject. Accordingly, the Projectile Motion Concepts Test was developed. The data were obtained through 43 students in an experimental group taught with learning activities based on conceptual change instruction and 39 students in a control group who followed traditional classroom instruction. The results showed that conceptual change-based instruction caused significantly better acquisition of conceptual change of projectile motion concepts than the traditional instruction.     

High school students' understanding of resistance in simple series electric circuits

In view of the lack of work on the understanding of resistance concept, we studied the understanding that high school students (from the eighth to the twelfth grades) were able to develop with regard to the interrelationships between this concept, and the potential difference and current concepts (Ohm's law). In addition, we explored the immediate effects of exposure to electricity courses on the intuitive mastery of these relationships. The participants were presented with information on potential difference and intensity of current and asked to predict the corresponding resistance values. In this current-potential difference context, the resistance concept was difficult to understand. For the majority of participants, resistance was a direct function of both current and potential difference, which is more reminiscent of the concept of power than of the concept of resistance. The systematic teaching of electricity concepts and Ohm's law had only limited, positive as well as negative, effects on the understanding of these relationships. The implications for education are discussed.     

Explaining systems: Investigating middle school students' understanding of emergent phenomena

Science, as with all cognitive activities, is fundamentally a matter of interpretation, sense‐making, and explanation. This study focused on a small group of middle school students as they developed understanding of a particular type of phenomena: emergent systems. Such systems are notable in that macro‐level properties emerge as the result of micro‐level interactions between system components. I describe students' initial understanding of emergent systems, as well as the ways in which their thinking came to reflect the following heuristics: (a) recognition that there may not be a singular causal force underlying the system; (b) distinguishing between micro‐ and macro‐levels of analysis; and (c) comprehending that even small changes at the micro‐level can have significant effects at the macro‐level (Resnick, 1994 ). I conclude by considering some implications for science education. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 784–806, 2000     

High school students' evolving alternative conception related to the volume of gas: A Lakatosian perspective

The purpose of this case study, informed by a Lakatosian perspective, is to identify how an alternative conception that originates in present learning but is related directly to subsequent learning contexts can be constructed. Before the study, one of the authors found by accident that a student who had learned about Avogadro's principle and chemical reaction in South Korea constructed an alternative conception related to the volume of gas. Later, we identified seven Korean high school students with the alternative conception through a test and analyzed their underlying understandings qualitatively through interviews. The results show that they had a scientific conception—core conception—and intuitive assumptions about implicit information of external representations—implicit assumptions—in common. The students' implicit assumptions could be divided into three types again: core assumption, auxiliary assumption, and context-inducing assumption. The core assumption, like the core conception, played a significant role in constructing the alternative conception (hard core), while the auxiliary assumptions were incomplete implicit assumptions to protect the alternative conception (protective belt). The context-inducing assumption was an implicit assumption bringing the context of the subsequent curriculum, and the core conception and the core assumption could be interpreted in this induced context. At the end of the study, the implications related to learning progressions were discussed.     

大学生自我效能感与学习倦怠相关关系研究

本研究采用网络问卷发放方式试图研究大学生学习倦怠和自我效能感之间的相关关系。通过对自我效能感与学习倦怠(情绪低落、行为不当、成就感低)数据之间的统计分析,结果发现,自我效能感与成就感低存在显著负相关。进一步过对生源地、性别、专业、年级四个维度进行统计分析,发现在自我效能感方面性别和专业间均存在显著差异。在学习倦怠方面,性别与专业属性在成就感低这一维度上存在显著差异。     

Reflection: issues related to improving professors' teaching and students' learning

We describe here the outcomes of our research on the reflection of six professors considered exemplary in their teaching. For instance, we found that they all held and used considerable knowledge about learners, as groups and as individuals, and used this knowledge in reflecting on the impact of their teaching. We use this information to elaborate on the role of reflection in the construction of teaching knowledge. Lastly, we address how the model of reflection we developed helps us understand the factors influencing one's ability to effectively reflect on teaching.     

论中学生学习物理的兴趣培养

当学习者本身对学习发生浓厚的兴趣时,学习者的整个学习就会积极起来,并能极大的提高学习效率。为了更好的学习物理,本文结合物理学科的特点,提出：通过趣味实验,激发学生学习物理的兴趣;通过提高教学艺术,巩固学生学习物理的兴趣。     

Building middle school students' understanding of proportional reasoning through mathematical investigation

This article describes and shares an innovative pedagogical practice that holds promise in contributing to the teaching and learning of proportions in middle school. The teaching and learning of mathematics with understanding framework was used as a vehicle to help 21 seventh grade students reason proportionally. The findings of this unit suggest that the classroom culture, which encouraged the students to make connections between their existing and new ideas and reflecting and communicating their thinking, contributed to their emerging understanding of proportions. The use of an authentic and non-routine task involving liquid measurements also heightened their interest, curiosity and enthusiasm, thereby contributing to their excitement about the mathematics they were learning.     

High school students' use of diagrams during reading

This study examines how high school students use diagrams and summaries during reading and the effects of such on comprehension. The roles of verbal and spatial ability are also examined. Seventy-four Year 7 (13-year-old) students each read a text presented on a computer screen. The text was presented one sentence at a time and subjects could call up a diagram or content-equivalent summary of the main ideas of the text at any time. Time to read the sentences and the adjunct aids was controlled by the subject and recorded by the computer. In addition, the computer kept a record of where in the text subjects made a text-to-aid move. After reading, the subjects completed a 10-minute filler task and then produced free recalls of the text. The free recalls were examined for the inclusion of details and main ideas. Path analyses showed a significant direct effect of verbal ability on the recall of details and main ideas as well as a significant indirect effect through time on diagram. Spatial ability was not found to have any effect on recall, either directly or indirectly. Analyses of text-to-diagram moves showed more inspections in the first few sentences followed by an essentially random inspection pattern. Instructional implications are discussed.     

Deep learning goes to school: toward a relational understanding of AI in education

ABSTRACT

In Applied AI, or ‘machine learning’, methods such as neural networks are used to train computers to perform tasks without human intervention. In this article, we question the applicability of these methods to education. In particular, we consider a case of recent attempts from data scientists to add AI elements to a handful of online learning environments, such as Khan Academy and the ASSISTments intelligent tutoring system. Drawing on Science and Technology Studies (STS), we provide a detailed examination of the scholarly work carried out by several data scientists around the use of ‘deep learning’ to predict aspects of educational performance. This approach draws attention to relations between various (problematic) units of analysis: flawed data, partially incomprehensible computational methods, narrow forms of educational’ knowledge baked into the online environments, and a reductionist discourse of data science with evident economic ramifications. These relations can be framed ethnographically as a ‘controversy’ that casts doubts on AI as an objective scientific endeavour, whilst illuminating the confusions, the disagreements and the economic interests that surround its implementations.     

Relationships between students' meaningful learning orientation and their understanding of genetics topics

This study explored factors predicting the extent to which high school students (N = 140) acquired meaningful understanding of the biological topics of meiosis, the Punnett-square method, and the relationships between these topics. This study (a) examined mental modeling as a technique for measuring students' meaningful understanding of the topics, (b) measured students' predisposed, generalized tendency to learn meaningfully (meaningful learning orientation), (c) determined the extent to which students' meaningful learning orientation predicted meaningful understanding beyond that predicted by aptitude and achievement motivation, (d) experimentally tested two instructional treatments (relationships presented to students, relationships generated by students), (e) explored the relationships of meaningful learning orientation, prior knowledge, instructional treatment, and all interactions of these variables in predicting meaningful understanding. The results of correlations and multiple regressions indicated that meaningful learning orientation contributed to students' attainment of meaningful understanding independent of aptitude and achievement motivation. Meaningful learning orientation and prior knowledge interacted in unique ways for each topic to predict students' attainment of meaningful understanding. Instructional treatment had relatively little relationship to students' acquisition of meaningful understanding, except for learners midrange between meaningful and rote. These findings imply that a meaningful learning approach among students may be important, perhaps as much or more than aptitude and achievement motivation, for their acquisition of interrelated, meaningful understandings of science.     

影响中职学生学习兴趣的因素及对策探析

目前中职学生普遍存在的厌学现象,造成这种现象的原因是多方面的,有社会、学校、家庭和学生自身等各种原因．如这种现象不及时加以解决,许多中职学校将无法完成预定的教育目标．尝试从学生自身、学校教学和教师等方面提出解决对策．     

Secondary school students' conceptions of learning and their relationship to achievement

Conceptions of learning were investigated in three studies. Study 1 piloted a modified version of Purdie and Hattie's (2002) Conceptions of Learning Inventory (COLI-I) with 236 secondary students. Multilog analysis was used to remove items with poor measurement characteristics. Study 2 used a nationally representative sample of 701 New Zealand secondary school students who completed the COLI-II. The measurement model had marginally acceptable fit. Study 3 consisted of 608 secondary students who completed a slightly revised COLI-III and provided standardised academic reading and mathematics achievement data. The Study 2 and 3 samples were found to have configural invariance and the structural model mapping students' conceptions of learning onto their academic achievement had acceptable fit. The conception that learning is a duty predicted lower achievement and the conception of learning as continuous predicted higher achievement. This is the first study to empirically demonstrate a direct relationship between learning conceptions and academic outcomes in the secondary sector.     

Contextualizing instruction: Leveraging students' prior knowledge and experiences to foster understanding of middle school science

Contextualizing science instruction involves utilizing students' prior knowledge and everyday experiences as a catalyst for understanding challenging science concepts. This study of two middle school science classrooms examined how students utilized the contextualizing aspects of project‐based instruction and its relationship to their science learning. Observations of focus students' participation during instruction were described in terms of a contextualizing score for their use of the project features to support their learning. Pre/posttests were administered and students' final artifacts were collected and evaluated. The results of these assessments were compared with students' contextualizing scores, demonstrating a strong positive correlation between them. These findings provide evidence to support claims of contextualizing instruction as a means to facilitate student learning, and point toward future consideration of this instructional method in broader research studies and the design of science learning environments. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 45: 79–100, 2008     

Improving high school students' understanding of potential difference in simple electric circuits

This paper reports two studies into the understanding of the concept of potential difference in the current-potential difference-resistance context among 8th-12th graders (Study 1), and the efficiency of a learning device derived from Social Judgment Theory (Study 2). These two studies showed that: (a) when asked to infer potential difference from resistance and current information, most participants only relied on current and ignored or greatly underestimated the importance of resistance information; (b) exposure to an electricity course did not much alter the way participants infer potential difference from resistance and current information; (c) a simple learning device considerably improved the way participants infer potential difference from resistance and current information; and (d) this observed improvement promised to be durable, at least in the short term.     

Students and school characteristics related to elementary school students' views of the nature of science

The purpose of this study is to investigate student- and school-level factors that help to explain the difference in the nature of science (NOS) views. Overall, the design of this study is correlational. The sample consisted of 3062 students enrolled in the sixth, seventh, and eighth grades of elementary schools in Turkey. A hierarchical linear modelling was selected as a modelling technique. This study has established the importance of the student's socioeconomic background, learning approaches undertaken, self-efficacy, and motivational goals in the formation of their NOS views. The findings reveal that quality of both the physical infrastructure of schools and the educational resources in schools, parent educational levels, student achievement, self-efficacy, experience of meaningful learning, and learning goal orientation are positively related to different dimensions of student NOS views. Additionally, performance goal orientation and rote learning approaches have a negative relationship with different dimensions of student NOS views.     

Conceptualizing teachers' understanding of students' mathematical learning by using assessment tasks*

The study was designed to support teachers on conceptualizing their understanding of students' learning by the use of assessment tasks. A school-based assessment team consisting of the researcher and four third-grade teachers teaching in the same school was set up as a learning context of supporting teachers in developing assessment tasks integral to instruction. The assessment tasks along with students' responses to the task, classroom observations, interviews, routine weekly meetings, teachers' weekly reflective journals, and students' responses to the assessment tasks were the data collected in the study. The teachers' views of using assessment tasks and the generation of assessment tasks were developed in the course of the study. In the process of generating assessment tasks, teachers improved their awareness of students' various solutions and learning difficulties to a specific problem, their awareness of the importance of developing students' critical thinking, and their awareness of where students need to make a remedial instruction. The research reported in the paper was supported by the National Science Council of Taiwan under Grant NSC 90-2521-S134-003-. The opinions expressed in this paper are those of the author and do not necessarily reflect the view of funding agency.