Background: The paper discusses how the design of summative assessments of practical science can be enhanced through the use of robust theoretical models that capture the diversity of scientific methods. The developments in assessment policy in England and the role of practical science in teaching and learning of science are reviewed. Purpose: The…

Background: In the field of science education, the importance of assessment in students' learning process has been recognized. Understanding of how students perceive science assessment and feedback may be an important issue that science education researchers need to pay attention to in order to achieve meaningful learning. Purpose: The purpose of…

Background: Research on chemistry education has found that students have commonly some difficulties in understanding chemical changes. These difficulties in the learning process have negatively affected students' success. For this reason, it is very important to overcome students' learning difficulties with new materials that prevent the…

Background: Several different measures have been proposed to solve persistent validity problems, such as high task-sampling variability, in the assessment of students' expertise in 'doing science'. Such measures include working with a-priori progression models, using standardised item shells and rating manuals, augmenting the number of tasks per…

Background: Education Standards highlight the importance of conceptual knowledge. Instructional tasks play a key role in biology instruction and offer learning opportunities for students. Tasks contain of a content and a demands part. Therefore, complexity and cognitive level are adequate variables to describe tasks and are assumed effective for…

Purpose: This study investigates how senior science teachers viewed the effects of a Raising Test Scores policy and its implementation on instruction of higher order thinking (HOT), and on teaching thinking to students with low academic achievements. Background: The study was conducted in the context of three concurrent policies advocating: (a)…

Background: The context-based approach (CBA) is one of the approaches that allow learning to take place with real and related context, and this has increasingly become more popular. Purpose: The purpose of this study is to investigate the effect of the REACT strategy of the CBA on remedying 12th grade students' alternative conceptions of…

Background: A substantial review study of concept cartoons reports that few studies have indicated their functions. For this reason, the present study illuminates the extent to which concept cartoon-embedded worksheets (through constructivist context) accomplish these functions in conceptual learning. Purpose: The purpose of the study is to…

Background: In the last few decades, researchers have turned their attention to students' understanding of scientific concepts at different school levels. The results indicate that the learners have different ideas, and most of them are inaccurate in terms of those generally accepted by the scientific community. Purpose: This study was undertaken…

Background: Density is difficult to learn and teach in middle schools. This study, hypothesizing that the density concept develops as part of a conceptual system, used a conceptual change approach to teaching density. The approach emphasized the use of multiple strategies to teach the density concept and the associated concepts in the conceptual…

Background: Practical work is widely seen as a necessary part of a good physics education, but convincing evidence that it impacts positively on pupils' learning is scarce. Recent work suggests the use of talk and discussion might hold the key to making practical work more educationally productive. Purpose: The research question that this study…

Background: Misconceptions are major obstacles to learning physics, and the concepts of heat and temperature are some of the common misconceptions that are encountered in daily life. Therefore, it is important to develop valid and reliable tools to determine students' misconceptions about basic thermodynamics concepts. Three-tier tests are…

Background: Context-based learning approaches are used to enhance students' interest in, and knowledge about, science. According to different empirical studies, students' interest is improved by applying these more non-conventional approaches, while effects on learning outcomes are less coherent. Hence, further insights are needed into the…

Background: The development of two-tier multiple-choice questions has permitted the diagnosis of students' understanding on various topics in the sciences as well as helped to ascertain the alternative conceptions they have. A limitation of two-tier diagnostic instruments that has been noted in the literature, but which has not been…

Background: Past studies have shown significant associations between students' conceptions of learning science and their science learning self-efficacy. However, in most of the studies, students' science learning self-efficacy has often been measured by a singular scale. Purpose: Extending the findings of these studies, the present study adopted a…