The conical pendulum is a topic theoretically approached in physics literature, but with little experimental activity developed due to the difficulty of reproducing the conical motion in ideal experimental conditions. This work consisted of studying the motion of a rigid conical pendulum using video analysis. The experimental results were used as…

Membrane separation processes, from reverse osmosis to ultrafiltration to microfiltration, are gradually receiving more and more emphasis in undergraduate chemical engineering curricula. Of these processes, ultrafiltration tends to be the most amenable to the standard chemical engineering approach of theory development, mass and/or energy…

Overall, the major chemical information retrieval products Reaxys and SciFinder have several similarities such as numbers of document records, numbers of characterized substances (counting the PubChem Compounds integrated in Reaxys), and, possibly, numbers of different chemical reactions. Reaxys has well over 100 times the number of experimental…

Much of the debate about that which comprises teachers' professional knowledge has been important in the academic literature but does not necessarily reflect the reality of how they think as they construct the knowledge that underpins their practice. Typically, teachers are not encouraged to spend time talking about teaching in ways that are…

While some might argue that lessons such as this cater towards nonformal education, teachers should not be deterred from integrating these lessons into their formal classrooms. Nonformal lesson plans--including their structures and techniques--can and should be integrated into formal classroom settings. Many nonformal activities are easy to…

The "big bad wolf" chased the squealing children around the playground as they looked for a place to hide. Because Mr. Lòpez and Ms. Kim had introduced the work of engineers and the engineering design process into their unit on The Three Little Pigs, they knew their preschool students would choose a structure that could withstand any…

Apps are becoming increasingly important in education. However, critical educational research has hardly ever undertaken up-close analyses of educational apps. This article provides an extensive analysis of one 'learning to code' app called Grasshopper. Drawing from the field of Science and Technology Studies, the article adopts a theoretical…

In this paper, I describe an approach to the integration of theory and practice at the intrapersonal, interpersonal, and organizational levels. The results of the research projects in which I have been involved over the last ten years are used to illustrate how these three levels have facilitated the identification of three tensions. These…

This article examines factors that are limiting the effectiveness of science education among Indigenous learners. The science classroom requires a fundamental change in its structure. There needs to be an increased focus on defining and examining Indigenous knowledge, on incorporating activities that meet relational needs by using traditional…

Multiple perspective interviews (MPIs) involve interviewing members of a social group separately and triangulating their accounts during analysis to gain insights into the functioning of such groups (e.g. families). So far, there has been little engagement with the specific challenges of MPI research during the analysis, particularly with…

Numerous previous studies have reported the difficulties associated with learning the Brønsted-Lowry acid-base model. The Brønsted-Lowry acid-base model requires complex systems thinking because it considers random interactions between reactant and product particles and effective particle collisions in forward and reverse reactions. The system…

This article proposes that educational personalization may be usefully understood from a process perspective. It defines educational personalization as that which occurs within any "planning or decision-making process" which runs for one student at a time, and uses "information from or about individual students," in order to…

Assessment is a central feature of student learning in higher education and has a strong influence on the student experience. Accordingly, the appropriate communication of assessment aims is a priority for all higher education institutions. This study proposes an analytical framework for the interpretation and creation of assessments across higher…

This article presents a meta-interpretative synthesis of contrasting research studies about methodological and theoretical challenges for Swedish preschool teachers in systematic quality development work. The first challenge involves an awareness of producing documentation from different levels of preschool work. The second challenge concerns…

"cpm.4.CSE/IRT" ("c"ompact "p"rocess "m"odel for "C"ompetence "S"cience "E"ducation based on "IRT" models) is a process model for competence measurement based on IRT models. It allows the efficient development of measuring instruments for computer science education.…