In this article we present the fascinating reconstruction of an accident where a car hit a boy riding his bicycle. The boy dramatically flew several metres through the air after the collision and was injured, but made a swift and complete recovery from the accident with no long-term after-effects. Students are challenged to determine the speed of…

This article examines an amusing application of the concept of kinetic energy. Using some rudimentary physical notions, we have analysed the energetics of the motion of Santa Claus. The results, which are quite surprising, can be of interest to high school and early college physics educators when they teach kinetic energy, and energy conservation…

Lessons about elementary particles at the secondary school level can degenerate into listing a zoo of particles and reactions, resulting in disorganized and rather meaningless knowledge. A more powerful way is to focus on conservation laws, symmetries and reaction diagrams. The conservation laws and symmetries provide generalizing power that…

This paper examines the effects of substituting a computer simulation for real laboratory equipment in the second semester of a large-scale introductory physics course. The direct current circuit laboratory was modified to compare the effects of using computer simulations with the effects of using real light bulbs, meters, and wires. Two groups of…

There is continuing concern about the low enrolment of students on to some undergraduate science courses, especially physics. Here we explore some of the reasons that might underpin this. The views about physics and biology of Year 1 undergraduate students on English, physics and biology programmes of study were compared using a closed-form…

A simple circuit problem treating an inductor, resistor and battery in series has uncovered a basic misconception of first-year students. The misconception is not about circuits or electrical properties but concerns rather the meaning and interpretation of the rate of change (instantaneous slope or derivative) of physical quantities. Resolving the…

The study of astronomy, as an important part of any science education programme, provides our students with insights into more than just the cosmos. It may also serve as a mechanism to link them to other natural and social sciences. This article examines equally valid interpretations of the constellation Canes Venatici as an example of how the…

In this article we describe two simple experiments using an ion accelerator as an aid to the teaching of electromagnetism to high-school students. This is part of a programme developed by a Brazilian State funding agency (FAPERJ) which aims to help scientifically minded students take their first steps in research.

Johann Wolfgang Dobereiner, in 1829, made the first significant attempt to reveal a relation between the properties of the chemical elements and their atomic weights. His groupings remain useful for providing reasonable estimates for the properties and the atomic weights of the trans-lawrencium elements.

A lab rotary experiment using the pH measurements of an aqueous solution to monitor the course of a solvolytic reaction was conducted. This experiment allowed the students to gain experience in taking precise pH measurement, to use nonlinear analysis techniques for analyzing kinetic data and to use the Arrhenius equation for determination of…

The main aim of this study was to determine students' perceptions toward web-based versus paper-based homework and identify any differences based on homework performance score and grade point average. A 21-item perception of online vs. paperbased homework survey was administered to 103 students (54 were male and 49 were female) in general…

The main aim of this study was to determine students' perceptions toward web-based versus paper-based homework and identify any differences based on homework performance score and grade point average. A 21-item perception of online vs. paper-based homework survey was administered to 103 students (54 were male and 49 were female) in general…

"How ScienceWorks" is now the focus of the national science specifications in English schools. This article is a brief introduction to the philosophy of science from the Greeks to the present day that underpins this notion. It consists of a brief summary of the contributions of nine philosophers and/or scientists to the debate: Aristotle, Roger…

In this article we report on a group activity, based on previous work [Hansson & Redfors: 2006b, "Science & Education" (accepted)], in an upper secondary physics class in Sweden. The aim was to engage students in a discussion about which presuppositions that are really necessary for physics. During the activity the students were…

Spreadsheets can be a powerful tool when it comes to teaching physics. From data analysis and graphing to animated simulations, Excel[R] is a very versatile program for the educator and learner alike. This paper describes and supports another use for Excel through Reflective Formative Assessment Spreadsheets (RFAS). To illustrate the use of RFAS,…