The overhead projector is perhaps passing out of use, but it is still a useful device with which to do lecture demonstrations. In my early years at Kenyon I was teaching the pre-med course, and found that the overhead projector was an ideal platform for showing the phenomena of polarized light. This note is a discussion of how I learned to use the…

As I approach my 70th year in physics, let me tell my younger colleagues about my adventures with computation. When I was 14, my father gave me a slide rule because I appeared to be headed toward a career in physics. Since then, I have had experience with many other calculating devices.

The purpose of this article is to provide a brief overview of the history of projection in education, discuss potential benefits to using projection technology, and finally share ideas for the use of projection throughout typical lesson content (e.g., introductory, skill, fitness and game activities) for Physical Education programs. This is also…

Additive colors are interesting to young students. In this paper, we show a convenient and straightforward method to demonstrate this phenomenon by projector. It produces defocus blur and reduces imaging quality for color mixing. We believe this demonstration experiment can be performed in most classrooms.

In the late nineteenth and early twentieth centuries, at a time when administrations in various countries set up new school systems or considered reforming existing ones, world exhibitions offered the ideal opportunity for the transnational exchange of knowledge and ideas. This article demonstrates both the impact of ideological views and…

Drawing is a teaching tool that provides numerous benefits to student learning, including enhanced knowledge retention, improved observation skills, and increased engagement with course content. However, these exercises also place high cognitive demands on students and require a considerable time commitment. To acknowledge and celebrate the effort…

Projection-based augmented reality and virtual reality are used in a visual arts-based educational project in contemporary art museums from an a/r/tographic perspective. The project 'Art for Learning Art' (in Spanish, "Arte para aprender arte"), at the Museo CajaGRANADA in Granada (Spain) has been developed in collaboration with the…

Contemporary rapid advancements in science and technology have brought about and continue to convey change in all sectors of everyday life. Education as one of the institutions of utmost importance is directly and indirectly affected by these changes and needs to redefine its role to keep pace. Nowadays, information and communications technologies…

Smartphone has become a daily necessity in supporting the mobility of users, including teachers and students. The need of users to make multi-presentation via a smartphone wirelessly does not fit with the cost and multiplatform support. This study aims to produce a solution by using Raspberry Pi as a wireless digital media player that will be…

This study aims to describe a novel teaching mode that allows for direct instructor-student and student-student discussions of material balance concepts by means of active learning. The instructor explains the concepts during class time while using a remotely controlled laboratory system that is projected on a screen with real-time access to the…

The camera obscura (Latin for "darkened room") is the earliest optical device and goes back over 2500 years. The small pinhole or lens at the front of the room allows light to enter and this is then "projected" onto a screen inside the room. This differs from a camera, which projects its image onto light-sensitive material.…

Many years ago I was running the standard laboratory experiment on thin lens optics. The source was the usual self illuminated object mounted on an optical bench, and a converging lens formed a real image on a screen. One of the students sitting near one wall of the darkened lab was having some trouble with the idea of image formation. Her face…

It may be too soon for students to be showing up for class with popcorn and gummy bears, but technology similar to that behind the 3D blockbuster movie "Avatar" is slowly finding its way into college classrooms. 3D classroom projectors are taking students on fantastic voyages inside the human body, to the ruins of ancient Greece--even to faraway…

Various wave optics experiments can be carried out using an ordinary compact disc. The CD is suitable for use as a diffraction grating. For instance, a standard CD (700 MB) has 625 lines/mm. In this article, the authors describe two white-light diffraction demonstrations for a large audience, realizable using a CD (as reflection or transmission…

Liquid carboxylic acids (or primary amines) with limited solubility in water are dissolved by addition of aqueous sodium hydroxide (or hydrochloric acid) on the stage of an overhead projector using simple glassware and very small quantities of chemicals. This effective and colorful demonstration can be used to accompany discussions of the…