Conrad Hal Waddington's epigenetic landscape is now a central paradigm in evolutionary developmental biology. This article proposes that it should be adopted into middle-years (ages 11-16) biology curricula as a way of visualising the interactions of the genome with the environment. The epigenetic landscape is explained, with some biographical…

Entrenched compartmentalisation of subjects in secondary school means that students lack opportunities for learning how disciplines relate to each other and how knowledge can be applied in real-world contexts. This article examines what it means to 'think like a scientist in a multidisciplinary arena' and why this is (and should be) an integral…

Formal teacher preparation programs are facing the challenge of ineffective instruction of educational theories. It is partly because educational theories are taught through direct instruction, which could lead to problems such as impersonality and low motivation of pre-service teachers. In addition, it is also an unwieldy task for teacher…

Nearly every introductory physics or chemistry course includes live lecture demonstrations, which can range from simple illustrations of a pendulum to elaborate productions with specialized apparatus and highly trained demonstrators. Students and instructors often consider "demos" to be among the highlights of these classes. Yet, in some…

The teaching of wave physics has developed over the years, including devices that demonstrate water waves being used effectively for a long time. However, it was not easy to select and display the wave frequencies. This research had developed a DIY Ripple Tank experiment set using a smartphone application to measure the properties of water waves.…

Despite mixed results in research on student learning from drawing in science, there is growing interest in the potential for this visual mode, in tandem with other modes, to enact and enable student reasoning in this subject. Building on current research in this field, and using a micro-ethnographic approach informed by socio-semiotic…

This study focuses on designing a laboratory learning program for a high school chemistry course in which students could discover the fundamental principles of Hess's law via stepwise inquiry. By exploring the chemical properties of common desiccants, mainly those that were reactive in water, students were introduced to the exothermic reaction of…

Augmented reality (AR) is a means of superimposing artificial 3D objects over the real world via a mobile device. An AR standard file format has been recently implemented on mobile devices that current students commonly own. Here we describe three relatively nontechnical methods to produce 3D AR objects for chemistry courses and demonstrate their…

This laboratory experiment visually demonstrates the advanced scientific concept of aggregation-induced emission (AIE) using hands-on learning methods. The experiment is divided into two parts: the first period consists of synthesis and isolation of the organic compound 2(TPA-O)-TPE using typical organic chemistry lab techniques; the second period…

Understanding the controls of the oxidation rate of iron (Fe) in oxygenated aquatic systems is fundamental for students of the Earth and Environmental Sciences as it defines the bioavailability of Fe, a trace metal essential for life. The laboratory experiment presented here was successfully developed and used during a third-year undergraduate lab…

This paper reports our work on replacing lab report grading by post-online lab quizzes using Desire2Learn (D2L, an online course management software), specifically, how we circumvent some of the limitations imposed by D2L and the outcomes.

In a paper (posthumously) co-authored by Isaac Newton himself, the primacy of geometric notions in pedagogical expositions of centripetal acceleration has been clearly asserted. In the present paper we demonstrate how this pedagogical prerogative can inform the design of an experiment involving an accelerometer-equipped smartphone rotating…

This article describes an activity appropriate for middle or high school physics or physical science students. Rather than giving the answer to the question "How does a milliliter compare to a cubic centimeter?" the students develop a procedure for measuring volume by calculation and by displacement of water. Students share the data and…

Indigenous knowledge provides specific views of the world held by various indigenous peoples. It offers different views on nature and science that generally differ from traditional Western science. Futhermore, it introduces different perspectives on nature and the human in nature. Coming basically from a Western perspective on nature and science,…

Changes in environmental conditions can have a profound impact on organismal processes. For aquatic organisms, changes in dissolved oxygen concentration can have major repercussions, notably for physiological processes that have high long-term energetic costs and are more likely to rely on aerobic metabolic pathways. Here we propose a simple…