Describes the construction and use of a life-size model which shows blood flow under normal and pathological conditions. Four experimental procedures (single vessel occlusion, dilation of distal vascular bed, single artery stenosis, and multiple artery stenoses) typical of those demonstrated by the model are discussed and diagrammed. (DH)

Indicates that the most dangerous laboratory hazards are the least dramatic ones and that hazardous chemicals are often used in laboratories without proper precautions. Selected sources of information essential for secondary schools and recommendations for safe practices and chemical use statistics from a study of Ohio high schools are given. (DH)

Discusses the use of microcomputers in science education: (1) computer-assisted instruction; (2) testing; (3) data processing; (4) simulation; (5) teacher assistance; and (6) data collection. Gives educational applications of microcomputer-based laboratories, pointing out advantages and disadvantages. Outlines current drawbacks and makes…

Describes an X-Y scanner used to create acoustic holograms. Scanner is computer controlled and can be adapted to digitize pictures. Scanner geometry is discussed. An appendix gives equipment details. The control program in ATOM BASIC and 6502 machine code is available from the authors. (JM)

Describes an experimental procedure to measure the specific heat of a gas. Discusses equipment, setup, and procedures and provides sample values obtained for air, propane, helium, carbon dioxide, and argon. (JM)

A pilot project was initiated in 1979 at the University of Delhi to develop low-cost, locally produced science equipment. This article: (1) describes the pilot project; (2) presents examples of the low-cost equipment produced; and (3) discusses how the approach used rather than the equipment developed is disseminated. (JN)

A modular system titled "Principles of Technology" for grades 11 and 12 is described. The program, which blends academic and vocational education to meet increased science and mathematics requirements, uses video presentations and hands-on laboratory exercises and can be used as part of a one-or two-year technical program or integrated…

Presents the historical, technological, and pedagogical factors that led to high expectations in the use of language laboratories for teaching foreign languages. Presents findings of five studies on laboratory effectiveness showing that efficiency tests were largely irrelevant and inconclusive. Includes 10 proposals for language laboratory use.…

Described is an inexpensive wave tank used to study the amplitude of tsunamis travelling down a channel of decreasing depth. A detailed discussion to theory and computations is included. (SL)

Discusses the planning, preparing, assessing, and evaluation of language laboratory technology and pedagogy. (AM)

An investigation was carried out in Sweden to examine language laboratory use. The degree of use, equipment function, method of use, access to lab programs, instruction to teachers on use, teachers' and pupils' attitudes and difficulties were studied by means of questionnaires. Improvement suggestions are made. (CHK)

Describes a three-step method to acquire elementary school classroom equipment by collecting recyclable materials from parents. Step One involves inventory, listing needed materials, and deciding on storage; Step Two, timing and introducing the project through various media; Step Three, cleaning, sorting and storing materials. (CS)

Education has traditionally studied the world by bringing it into the classroom. This method can result in situated learning that appears to students to have no relevance outside the classroom. Students acquire inert, decontextualized knowledge that they cannot apply to real problems. The obvious solution to this shortcoming is to reverse the…

This digest summarizes research on teaching special needs students relative to the concerns of K-12 science teachers. Guidelines for instituting inclusive policies and practices are presented. Strategies for preparing science classroom materials and adapting teaching methods for students with physical and learning disabilities are also discussed,…