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Hard of hearing students usually face more difficulties at school than other students. A classroom environment with wireless technology was implemented to explore whether wireless technology could enhance mathematics learning and teaching activities for a hearing teacher and her 7 hard of hearing students in a Taiwan junior high school. Experiments showed that the highly interactive communication through the wireless network increased student participation in learning activities. Students demonstrated more responses to the teacher and fewer distraction behaviors. Fewer mistakes were made in in-class course work because Tablet PCs provided students scaffolds. Students stated that the environment with wireless technology was desirable and said that they hoped to continue using the environment to learn mathematics.

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The heat capacity of a vacuum-annealed sample of tantalum has been measured in the normal and superconducting state from 1.3 to 25°K. In the normal state the heat capacity CN can be represented by the expression CN = O.OO136r+464.4(r/0) 3 , where 0 varies from approximately 255 degrees at the lowest temperature to 220 degrees at the highest. The zero-field transition temperature, T c , and the critical field H c were determined using a calorimetric method. T c was found to be 4.39°K. The width of the transition was approximately 0.03 °C. The measured critical field was within experimental error comparable to that calculated from the heat-capacity data. The tantalum sample therefore exhibited the properties of an ideal superconductor characteristic of the so called soft superconductors. The critical field at the absolute zero, from an extrapolation of the critical field data, was found to be 780 gauss.

Interactive video technology is being applied as an instructional strategy in various ways in education. It is a particu larly powerful technology when working with sport and human movement. O'Sullivan, Stroot, Tannehill, and Chou outline some applications ofthetechnol ogy in education; the final section de scribes development of an interactive video instructional package for use in skill analysistraining in a physical educa tion teacher preparation program. The authors suggest this medium holds great potential for assisting physical education teachers in learning to dis criminate appropriate and inappropriate elements of skill performance, thereby enabling them to provide appropriate feedback to students and improve per formance.