This study investigated the effect of in-service training in the use of the ripple tank equipment on science teachers' pedagogical content knowledge (PCK) about the topic of waves. Three Grade 10 Physical Sciences teachers participated in this qualitative case study. The Refined Consensus Model informed the conceptual framework of this study,…

Aim/Purpose: This case study examines students' affective responses to and relationships with two-dimensional (2D) and 360° videos that were experienced with or without low-cost virtual reality (VR) headsets. Background: The prior research on low-cost VR technology is scant. Schools and universities are not financially able to purchase tens or…

Students in a typical instrumental analysis course may learn more than 30 analytical techniques. There are more than 150 components associated with the instrumentation that they learn. To help students organize this large amount of information, we classified these components into four categories: sources, samples, discriminators, and detectors. In…

This paper describes a very simple, but accurate method of finding the position of the infinity focus of a telescope objective relative to the rear face of its lens cell. The method is easily undertaken in the classroom and provides an opportunity for learners to conduct an interesting and novel optical experiment which introduces thick lens…

Quantitative demonstration of chemical kinetics often requires sophisticated equipment and materials. By using inexpensive and commonly available chemicals, we propose here two clock reactions, oxygen-safranin-benzoin clock and cysteine-iodine-hydrogen peroxide clock. Students simply measure and add stock solutions to start clock reactions. Sudden…

This project engaged Ghanaian secondary pupils in authentic science and engineering activities by using model biodigesters that reduce organic waste and produce biogas and fertiliser. The pupils' activities paralleled scientists' activities, such as asking research questions and designing experiments. Our study included two cohorts of Ghanaian…

This article presents the Polish project entitled 'Detektory dla Szkol' ('Detectors for Schools', throughout the paper referred to as 'the programme'). It was developed at the Education and Training Division of the National Centre for Nuclear Research (Narodowe Centrum Badan Jadrowych, NCBJ) in Poland. The programme allows the schools to borrow…

We designed and tested a 3D motion tracking system which displays acquired and derived data using augmented reality. This setup, based on a virtual reality headset and its controllers, is a relatively low-cost, high-precision, six degrees of freedom, high-speed, multiple-objects tracking device. This apparatus proves to be a very high-quality…

In high school, LC(R)-circuits are an integral component of physics education. We propose a new setup for exploring those circuits utilizing the magnetic field sensor of a smartphone in combination with the application phyphox, which reads and displays sensor input. Coils with high inductance and low resistance generate low frequency oscillations…

A simple apparatus consisting of a plastic syringe coupled with a U-tube has been constructed. This setup is filled with water to trap air in one arm of the U-tube. A change in the volume of the enclosed air causes a change in its pressure that is indicated by the difference in the water levels. Boyle's law is shown by a linear relation between…

Video and interactive media provide visual exposition and review for students to formulate cognitive representations where learning and reflection take place, especially in science laboratories. More inclusively, open educational resources (OER) with interactive content can facilitate access to media-enhanced learning. This paper reports part of a…

The ground-breaking image of a black hole's event horizon, which captured the public's attention and imagination in April 2019, was captured using the power of interferometry: many separate telescopes working together to observe the cosmos in incredible detail. Many recent astrophysical discoveries that have revolutionized the scientific…

Nowadays, inquiry-based learning is getting a lot of attention as an effective education method. Therefore, it has been researched and implemented in various countries. Inquiry-based learning has been used in various subjects such as biology, mathematics, social studies, and others. In order to encourage a smooth implementation of inquiry-based…

A low-cost and easy-to-use water recirculation system for a condenser apparatus was designed and installed in an organic chemistry teaching laboratory. Relying on gravity and a small pump for water circulation, it supplies four stations simultaneously. The water recirculation system works very well with condensers used for distillation and reflux…

UV-vis absorption spectroscopy is one of the most accessible spectroscopic techniques at the high school educational level, and it is usually introduced in analytical chemistry courses due to its high versatility and to the wide range of applications in many fields of chemistry. Within this framework, we have developed an easy-to-use"…