Animations are widely used in today's science classrooms. Therefore it is very important to explore under which conditions animations are most effective. In earlier studies it has been generally shown that the effectiveness of instruction largely depends on management of cognitive load. The aim of the present study was to compare the effect of…

We propose to reconsider the well-known experiment about the interference of white light from a thin soap film by adopting as an illuminating source the RGB triad produced by a LED projector. The interference pattern shows up in a particularly fascinating way and it contains direct, essential information about both the wave nature of light and of…

Electricity is taught in junior high school science in Australia and many other countries. While electricity is all around us and one would say that its context and relevance are obvious, students generally do not find learning about electricity engaging. The objective of this paper is to describe the development and evaluation of an open inquiry…

Physical phenomena and relations can be described mathematically by functional dependencies. These are represented in the form of tables, graphs, algebraic expressions or verbal descriptions. Only the combination of different representations enables students to experience a physical phenomenon or concept in a holistic way. Therefore, students have…

There is a current push to understand and address the under-representation of Black folks in physics, and STEM more broadly. This dissertation presents research that explores this lack of representation through studies of identity and practice, premised on an understanding of systems of oppression operating within the culture of physics. This work…

The relative speed concept was chosen since it is linked with the relative nature of motion and it is likely that the students would harbor many alternative conceptions about it. The research objective was to identify the various ways students conceive relative motion. Qualitative data collected in various forms of representation received a…

Belonging in a discipline or department is an important aspect of people's persistence in that discipline or department, especially for undergraduate students. Previous research has shown that increasing student feelings of belonging in a department benefits all students and is even more valuable for women, racialized people, and other…

If I slowly raise a heavy book one meter up in the air, I do positive work. This work corresponds to an energy transfer. I lose chemical food energy that is consumed by my muscles to lift the book upward. Energy is gained by the book-Earth system in the form of gravitational potential energy that is stored in the gravitational field. But what…

Gyroscopes are frequently used in physics lecture demonstrations and in laboratory activities to teach students about rotational dynamics, namely, angular momentum and torque. Use of these powerful concepts makes it difficult for students to fully comprehend the mechanism that keeps the gyroscope from falling under the force of gravity. The…

If you think physics is only for older children, think again. Much of the playtime of young children is filled with exploring--and wondering about and informally investigating--the way objects, especially toys, move. How forces affect objects, including: change in position, motion, and shape are fundamental to the big ideas in physics. This…

The article proposes a new research object for a general physics course--the vapour Cartesian diver, designed to study the properties of saturated water vapour. Physics education puts great importance on the study of the saturated vapour state, as it is related to many fundamental laws and theories. For example, the temperature dependence of the…

Science teachers can always benefit from efficient tools that help students to engage with the subject and understand it better without significantly adding to the teacher's workload nor requiring too much of class time to manage. Reflective writing is such a low-impact, high-return tool. What follows is an introduction to reflective writing, and…

Classroom actions rely, among other things, on teaching habits and traditions. Previous research has clarified three different teaching traditions in science education: the academic tradition builds on the idea that simply the products and methods of science are worth teaching; the applied tradition focuses on students' ability to use scientific…

A cylinder rolling down an inclined board is a commonly seen and interesting object to study and it is also easy to experiment with and model. Following what has become a popular practice, we use smartphones to measure the angular acceleration of a cylinder rolling down a plane of different inclining angles. The friction force deviates from the…

The quantum mechanics of a simplified Pöschl-Teller potential in one dimension is analyzed at an elementary level. The number of bound states of this potential is determined by a parameter "l" characterizing the depth of the potential energy. The resulting collection of potentials with varying depth, as well as their ground state…