Stem cells are cells that can self-renew and differentiate into a variety of cell types under certain conditions. Stem cells have great potential in regenerative medicine and cell therapy for the treatment of certain diseases. To deliver knowledge about this frontier in science and technology to medical undergraduate students, we designed an…

Research in organic chemistry education has revealed that students often rely on rote memorization when learning mechanisms. Not much is known about student productive resources for causal reasoning. To investigate incipient stages of student causal reasoning about single mechanistic steps of organic reactions, we developed a theoretical framework…

The purpose of this research is to examine the effects of out-of-school science learning environments on the understanding of the science nature of seventh-grade students in secondary school. In this study, pre-test post-test group pattern model was used. The participants of the survey consisted of 22 students who attended the 7th grade in the…

Many young women do not see a place for themselves in science evident from the lack of young women entering and persisting in science majors and careers. This problem persists despite progress in young women's performance on various science achievement measures and degree attainment. This is an equity problem and also a loss of human capital. As…

Modern global society is complex and interconnected with infinite limitations and increasing competition for resources. Increasingly, people are aware of the impact of modern lifestyle choices on the sustainability of the planet. Sustainability is a growing focus of many world leaders, politicians, and educators. Many societal leaders agree that…

Nanoscience development affects almost every discipline of science, engineering, and technology. Not surprisingly, "the science of small" is also finding its way into science classrooms. In general, "nano" refers to a billionth of a meter--about 1/50,000 the width of a hair follicle. The term "nanoparticle" usually…

British scientist John Dalton (1766-1844), French scientist Joseph Louis Gay-Lussac (1778-1850), and Italian scientist Amedeo Avogadro (1776-1856) are familiar to many chemistry students. Such students may understand the importance of Dalton's atomic theory, model how Gay-Lussac's law relates the pressure and the temperature of a gas, and use…

This paper presents one way of demonstrating the Principle of Equivalence in the classroom. Teaching the Principle of Equivalence involves someone experiencing acceleration through empty space, juxtaposed with the daily encounter with gravity. This classroom activity is demonstrated with a water-filled bottle containing glass marbles and…

Newton's first and second laws have implications for the kinetic energy as well as the momentum of a body. It is recommended that this should be made explicit at an appropriate point in a course.

In physics, idealized models are often used to simplify complex situations. The motivation of the idealization is to make the real complex system tractable by adopting certain simplifications. In this treatment some unnecessary, negligible aspects are stripped away (so-called Aristotelian idealization), or some deliberate distortions are involved…

Kinetic energy and momentum are indispensable dynamical quantities in both the special theory of relativity and in classical mechanics. Although momentum and kinetic energy are central to understanding dynamics, the differences between their relativistic and classical notions have not always received adequate treatment in undergraduate teaching.…

The article discusses the allegedly decontextualized and ahistorical traits in positivist educational research and curriculum by examining its emergence in early twentieth-century empirical education. Edward Lee Thorndike's educational psychology is analyzed as a case in point. It will be shown that Thorndike's positivist educational psychology…

In a deep and dark corner of space, a cataclysm loomed. Two cosmic nemeses circled one another, locked in a macabre dance of death. Unfolding over millennia, the deadly waltz began leisurely enough. But with the dance came radiation and the energy loss that it implies. Orbit after orbit, the distance between the two protagonists shrank as their…

There is nowadays consensus in the community of didactics of science (i.e. science education understood as an academic discipline) regarding the need to include the philosophy of science in didactical research, science teacher education, curriculum design, and the practice of science education in all educational levels. Some authors have…

A very simple protocol for teaching Beer's Law and absorption spectrophotometry using a smart phone is described. Materials commonly found in high school chemistry laboratories or even around the house may be used. Data collection and analysis is quick and easy. Despite the simple nature of the experiment, excellent results can be achieved.