Understanding the nature of chemical thinking and action, as well as their application and impact on our world should be central goals of chemistry education at all educational levels. However, traditional school chemistry is still mostly focused on having students learn the body of declarative knowledge built over the years in the discipline.…

Over the past several decades it has become increasingly important to understand nature of science (NOS) for scientific literacy in science education. Science education researchers have suggested using socio-scientific issues to create a context for that purpose. The present fast-moving coronavirus or COVID-19 pandemic as a socio-scientific issue…

Science appears to be coming under increasing pressure in parts of society and the media, with an increase of 'fake news' and less regard for 'experts'. If this is to be combatted it is important that students develop a good understanding of both the big conceptual ideas of science and the nature of science itself. However, the nature of science…

The so-called "Rutherford's experiment," as it is outlined in many physics textbooks, is a case in point of the flaws around the history at the educational level of one of the decisive event of modern physics: the discovery that the atom has a nucleus. This paper shows that this alleged experiment is a very approximate and very partial…

An online HTML5 Fourier synthesizer app is provided that allows students to manipulate sixteen harmonics and construct periodic waves. Students can set the amplitudes and phases for each harmonic, seeing the resulting waveforms and hearing the sounds. Five waveform presets are included: sine, triangle, square, ramp (sawtooth), and pulse train. The…

In most high school physics classes, gravity is described as an attractive force between two masses as formulated by Newton over 300 years ago. Einstein's general theory of relativity implies that gravitational effects are instead the result of a "curvature" of space-time. However, explaining why things fall without resorting to Newton's…

There is, broadly speaking, an agreement within the international science education community that comprehension of the nature of science (NOS) should be a key element in the scientific literacy of citizens. During the last few decades, several didactic approaches have emerged concerning what and how to teach NOS. Also, one of the basic objectives…

The question in the title above is exploited to analyse the relationship between different astronomical models and frames of reference. The paper highlights the fact that the geostatic model, the favoured model in ordinary discourse, even that of scientists, is at odds with two cherished principles, that of the rectilinear propagation of light,…

In this article, a series of activities on explicit teaching of specific aspects of the 'nature of science' are presented. The authors explore teaching the nature of science through inquiry-based activities on electric circuits. The activities concern classification of objects as conductors or insulators and took place in three classes of 4th…

This article describes the development and deployment of Physics Toolbox Play, a gamified component of the "Android Physics Toolbox Sensor Suite" app, that can introduce young children through adults to fundamental physics principles. The app was used successfully in a variety of contexts, including STEM fairs with primary and secondary…

The private company SpaceX regularly launches satellites into geostationary orbits. SpaceX posts videos of these flights with telemetry data displaying the time from launch, altitude, and rocket speed in real time. In this paper this telemetry information is used to determine the velocity boost of the rocket as it leaves its circular parking orbit…

This chapter provides several examples of early activation of a critical attitude during a discussion of questionable explanations. One concerns the use of the survival blanket to protect against the cold, a theme which leads to discussion of a compromise between two imperatives: that of returning as much energy as possible to oneself (by putting…

If a small object is placed under the front leg of a chair, the chair tilts backwards. If the object is placed under a rear leg, the chair tilts sideways. The effect is surprising but can be analysed in terms of elementary physics.

A versatile experiment is described for the high school and college laboratory setting based on the synthesis of biobased polymers prepared from inexpensive, renewable, and nonhazardous chemicals. Combinations of readily available citric acid, glycerol, and tapioca root starch are used to prepare three polymeric materials with different observable…

As long has been known, there is no perfect way to teach science. This paper makes no claim to be the 'be-all and end-all' of science education. Rather it critically examines what we teach learners in science and what they learn and tries to offer suggestions that can help teachers to surmount the scholastic inadequacies they tend to encounter in…