The Ruben Flame Tube is named after H. Ruben, who published the demonstration experiment in "Annalen der Physik" in 1905. This article presents one of the many demonstrations the author uses to engage, motivate, and challenge his students.

Do-It-Yourself (DIY) Science Kits provide sets of science equipment, including worksheets and/or teachers' guides, and are valuable science resources for poorly equipped schools, particularly those located in geographically isolated areas. This paper reports an investigation of how four teachers in four different schools used an Astronomy Science…