Mutation, diversity, natural selection and the biology of human pathogens (including antibiotic resistance) are key features of the biosciences curriculum at A Level and undergraduate study. Few resources exist to allow students to engage with these topics in an interactive manner. This paper describes an interactive, online simulation of mutation…

This research investigates the use of student-generated animations in the teaching and learning of chemistry. Previous research has identified the potential for animations to contribute to student learning in science. In particular, animations have the capacity to represent the dynamic process and motions that may be inherent in some chemical…

New national and state science standards are different than those of the past. These new standards incorporate three dimensions in each performance expectation. Due to the recent release of Nebraska's College and Career Ready Standards for Science and lack of curricula resources available, school districts and teachers need quality models for…

The adoption of the Next Generation Science Standards (NGSS) has brought with it a need for classroom assessments that measure students' ability to make sense of, explain, and use science, with many of the performance expectations asking students to apply scientific principles and evidence to produce an explanation. But creating coherent written…

Classroom assessment is an essential part of education. The study investigated teachers' perceptions of classroom assessment and their current classroom assessments practices in secondary science in Bangladesh. Specifically, the study sought to gain an understanding of to what extent teachers use different classroom assessment strategies to…

The four representative models that define oxidation-reduction reactions are often used differently in different situations or contexts in chemistry textbooks. Although integrated models have been suggested to overcome the confusion caused by this, they have not been successful. We therefore aim to interpret the causes for difficulties in the…

The Periodic Table of Elements is central to the study of modern Physics and Chemistry. It is however, considered by teachers as difficult to teach. This paper reports on a case study exploring reflections on teaching periodic table concepts in five secondary schools from South Africa. Qualitative methodology of interviews and document analysis…

The scientific integrity, perceptions of scientific misconduct, and students' needs in the research ethics education of Korean and Japanese gifted students were analyzed to address three questions. First, how well do students practice research ethics in their research? Second, how do students perceive scientists' misconduct? Third, do students…

This study explored the professional responsibilities of district science coordinators, their professional development (PD) experiences, the relationship between their role, responsibilities, district context, and background, and barriers encountered in their work. A national sample (n = 122) of self-identified science coordinators completed a…

Students have difficulties in relating the chemistry phenomena they learned and the life around them. It is necessary to have teaching aids which can help them to relate between chemistry with the phenomena occurred in everyday life, which is chemistry's teaching aids based on local wisdom. There are 3 teaching aids which used in chemistry…

Despite widespread use in general chemistry laboratories, the crystal violet chemical kinetics experiment frequently suffers from erroneous student results. Student calculations for the reaction order in hydroxide often contain large asymmetric errors, pointing to the presence of systematic error. Through a combination of "in silico"…

In this study we present an analysis of how the structure and content of the Greek school textbook approaches the concepts of chemical kinetics, and an investigation of the difficulties that 11th grade Greek students face regarding these concepts. Based on the structure and content of the Greek textbook, a tool was developed and applied to…

We have discovered a new and formerly unstudied long-term impact of a system-wide research university program that provides opportunities for students to explore secondary school teaching as a potential career. Looking beyond teacher recruitment as the only assessment of success, we have investigated the impact of the program on those who explored…

In science classes, students usually learn about the law of definite proportions by the oxidation of copper. However, common procedures usually do not lead to proper results. This leads to confusion among the students because their experimental results do not fit to the theoretical values. Therefore, we invented a new procedure for this experiment…

Concerns persist regarding high school students' chemistry learning. Learning chemistry is challenging because of chemistry's innate complexity and the need for students to construct associations between different, yet related representations of matter and its changes. Students should be taught to reason about and consider chemical phenomena using…