This issue of the bulletin contains four major topics. The first is a discussion of problems involved in establishing good communication with science teachers concerning the activities of the Scottish Schools Science Equipment Research Centre (SSSERC) via exhibitions throughout Scotland. The second, headed "Biology Notes," presents a…

A simple analog computer program is described which, in conjunction with a dual-trace storage oscilloscope, can demonstrate travelling and standing waves, the effect of various reflection coefficients, standing wave ratios, and other wave phenomena. (Author/CP)

Traces physics curriculum innovation in Southeast Asia since the 1950s. The unique features of such innovation in Indonesia, Malaysia, Philippines, Singapore, and Thailand are highlighted. Forecasts for the future of physics education in part of the world are also discussed. (Author/HM)

Reviews several previously published uses of disposable plastic syringes and presents ten new uses in several different areas of physical science. (Author/GA)

A detailed and up-to-date description of how the Harbor Hill Elementary School mathematics laboratory operates is given along with a list of materials that are available in the laboratory. (MN)

Described is a mouse cage that can be built, at a cost of about $15, by intermediate-aged elementary students. (BB)

Laboratory techniques, instructional materials, and teaching methods for secondary school chemistry topics are provided. (CP)

A home economics classroom designed to conserve energy and encourage students to practice a simpler life-style is described, and a check list of forty-five suggestions for developing the home economics laboratory as an environmental model is presented. (BM)

A simple check list originally designed as an evaluation tool for tapes and tape series used in language instruction. The check list includes all aspects of the tape: its contents, its reference to textual material and its overall effect. There are also eight questions for the teacher's opinions. (AMH)

Maintains that teaching phonetics should be aimed at enabling the learner to correct himself and that intonation, rhythm and suprasegmental phonemes have commonly been neglected. Describes the value and use of the SUVAG-Lingua Frequency Filter for correcting pronunciation, individually and in groups. (Text is in German.) (IFS/WGA)

Describes how to construct an electronic device to be used in conductivity experiments using a 35 millimeter film canister, nine volt battery replacement snaps, a 200-300 ohm resistor, and a light-emitting diode. Provides a diagram and photographs of the device. (TW)

Reviews methods of determining apparent dip and highlights the use of a device which consists of a nomogram printed on a protractor. Explains how the apparent-dip calculator-protractor can be constructed and outlines the steps for its operation. (ML)

Describes three situations in which computer software was used in a chemistry laboratory. Discusses interfacing voltage output instruments with Apple II computers and using spreadsheet programs to simulate gas chromatography and analysis of kinetic data. Includes information concerning procedures, hardware, and software used in each situation. (CW)

Discusses three types of sensors; pressure, gas detection, and relative humidity. Explains their use for laboratory measurements of gas pressure and detection of specific gaseous species. Shows diagrams of devices and circuits along with examples and applications including microcomputer interfacing. (RT)

Describes the construction and uses of a low cost fermenter reaction vessel which is suitable for laboratory growth of microorganisms by continuous and batch cultures from plastic soft drink bottles. Lists materials, discusses modifications that can be made and gives examples of use. (CW)