CATO is a new user interface, written in Java and developed by the author as a response to the significant difficulties faced by students who only sporadically use computer algebra systems (CAS). The usage of CAS in mathematical lectures should be an integral part of mathematical instruction. However, difficulties arise for those students who have…

The purpose of this study was to explore critical thinking skills in peer feedback for Business English writing in order to facilitate the quality of peer feedback and quality of Business English writing. "Critical peer feedback" was conceptualized with the integration of "critical thinking" and "peer feedback" in…

The need for traps, a program routine which checks the validity of the user's response to the computer's request for input, in Computer Assisted Learning Packages, is discussed. Several example traps are described. (MK)

Discusses and compares advantages and disadvantages of large and small computer-based instructional systems. Predicted and actual costs in two systems--PLATO, which uses a mainframe system, and VITAL, a microcomputer-based system--are analyzed, and cost comparisons are made based on class size. (LRW)

Recommends an approach to computer-assisted language learning and development activities that addresses the total instructional system, including non-technological components. Eight procedural steps, based on an input-process-output model, are described for developing, refining, and evaluating the efficiency and effectiveness of CALL teaching…