This experiment describes a simple protocol for teaching acid-base titrations using potentiometry, conductivity, and/or photometry to determine end points without an added indicator. The chosen example examines the titratable acidity of a red wine with NaOH. Wines contain anthocyanins, the colors of which change with pH. Importantly, at the…

It is well known that the pitch of the sound produced by an excited glass shell can be tuned by adding some liquid in it. In this paper, it will be proved that the distribution of the liquid inside the shell plays a crucial role in this frequency shift. Thus it provides another way to tune the pitch of the sound by modifying the liquid…

Describes a pilot study where choral conducting students used miniaturized scores (simplified scores that focus on specific gestural problems). Students received three simplified scores, each one highlighting a different approach. Students overwhelmingly favored the simplified score using a cuing technique. Includes, score excerpts, student…

Discussed are applications of biochemistry. Included are designed drugs, clever drugs, carcinogenic structures, sugary wine, caged chemicals, biomaterials, marine chemistry, biopolymers, prospecting bacteria, and plant chemistry. (CW)

Explains and illustrates a simplified use of graphical analysis for analyzing the profit-maximizing firm. Believes that graphical analysis helps college students gain a deeper understanding of marginalism and an increased ability to formulate economic problems in marginalist terms. (DB)

Reviews "Standards for the Preparation of Social Studies Teachers," published by the National Council for the Social Studies (NCSS). Maintains that the document does not vary far from current practice and that it bases teacher preparation on content from history and social science courses. Argues that more emphasis on learning theory and…

Contributed by English teachers across the United States, the activities contained in this booklet are intended to promote the effective teaching of English and the language arts. Teaching strategies offered in the first section of the booklet are designed to stimulate language exploration by helping students learn to tell stories from pictures,…

Written by teachers of elementary school students, the 30 articles in this collection are designed to provide insights into the way children learn to write and to encourage teachers to examine their own theories and perceptions of writing and writing instruction. The articles are grouped in six sections, covering beginning writing, collaborative…