There is a need for robust, empirically-validated conceptualisations of teachers' attitudes towards teaching science, with a view to understand how these might explain their intention to teach science. The "Dimensions of Attitudes Toward Science" (DAS) theoretical framework suggests that cognitive, affective and perceived control…

Concepts relating to enzymes and energy are central to understanding chemical and biological processes at the molecular level. Student learning of these crosscutting concepts can be challenging, so it is important to identify misconceptions and remediate them early, especially in introductory classes. Here we describe an activity in which…

The paper describes an upper-division university course in Mars literature taught online since Fall 2013. The course readings comprise six novels relating to Mars. Authors include H.G. Wells, Edgar Rice Burroughs, Ray Bradbury, Phillip K. Dick, Greg Bear, and Kim Stanley Robinson. After an introduction, sections of the paper discuss course…

This study aimed to develop a Nature of Science Understandings Questionnaire within Associated Approaches (NoSQ-AA) by discussing "consensus view" of the teaching of nature of science (NoS) in light of critiques and suggestions. The second purpose of this paper was to evaluate pre-service science teachers (PSSTs)' nature of science…

While several studies have investigated gender inequities in the social learning environment of biology lecture courses, that same phenomenon remains largely unexplored in biology laboratory contexts. We conducted a mixed methods study to understand the influence of gender on student perceptions of their peers' research aptitude in introductory…

A perennial goal of science educators is to develop functional scientific literacy in their students, especially those who will not become professional scientists. This article provides an example of implementing a socioscientific issues approach in an undergraduate environmental science course that enables students to develop the knowledge,…

This dissertation investigates how the numerical representation of women in small collaborative groups influences their learning in a college biology class for non-majors focused on sex, gender, and society. Prior to the start of the semester, the researchers divided students into all-male, all-female, or mixed-gender groups of varying sex ratios.…

Quantum dots are colloidal semiconductor nanocrystals that display size-dependent electronic and optical properties. These materials are a visual demonstration of a quantum-mechanical effect. Here we present a laboratory exercise for undergraduate/Bachelor students as an introduction to colloidal nanocrystals and quantum dots. The students…

The synthesis of a [2]rotaxane through three- or five-component coupling reactions has been adapted to an organic chemistry experiment for upper-division students. The experimental procedure addresses the search for the most favorable reaction conditions for the synthesis of the interlocked compound, which is obtained in a yield of up to 71%.…

Metabolic Control Analysis (MCA) is a systems biology approach that measures the control of a metabolic step on the overall flux of a metabolic pathway. In undergraduate courses in biochemistry, learning of MCA can be encouraged by experimental activities demonstrating practical applications of the MCA theory. In this work, we present a laboratory…

An understanding of basic organic chemical reactivity is key for many biosciences students. The reactivities of different carbonyl groups affect their function in many biomolecules. A practical class, the two-step synthesis of paracetamol, has been devised to illustrate the electrophilic reactivities of carbonyls, which was covered in the…

The multiple-choice section of the final examination for the first-year Advanced Physics I course at the University of Newcastle, Australia between 2010 and 2018 was investigated for gender bias. A Mantel-Haenszel analysis revealed that approximately 20% of the multiple-choice questions exhibited statistically significant gender bias. A schema for…

Kombucha, a popular probiotic beverage, contains detectable concentrations of ethyl alcohol. To be sold as a nonalcoholic product, alcohol concentrations in kombucha must be shown to be less than 0.5% by volume. This paper describes the use of an inexpensive, commercially available sensor to reliably and accurately measure alcohol concentrations…

Due to the COVID-19 pandemic and the stay-at-home order implemented by the New York State Governor, the introductory undergraduate biology courses were changed to an at-home remote learning modality. To provide conceptual learning and hands-on experience, the second semester introductory biology laboratory course utilised a multi-modal learning…

Students are introduced to the term wavelength in optics at school level. In this paper, we present an inexpensive and simple method to measure the wavelength of the light of a light emitting diode using a light depending resistor. This experimental set-up is developed at Science Laboratory, Nehru Planetarium (Mumbai), India. It is useful as an…