We present a sensitive diffusion cloud chamber which does not require any radioactive sources. A major difference from commonly used chambers is the use of a heat sink as its bottom plate. The result of a performance test of the chamber is given. (Contains 8 figures.)

This study attempted to investigate the characteristics of interaction dynamics in a group oral interaction carried out by Japanese learners of English. The relationship between the participants' language development and interactional management functions (IMFs) was also explored. Oral performance tests in a paired or a small group have recently…

The main purpose of this research is 1) to establish a framework for the test development and the constructs of writing performance test, 2) to implement a developed writing performance assessment, and 3) to examine the degree of reliability and validity of the assessment tasks and rating scales. Construct-based processing approach to testing…

Scoring guidelines are given for four forms of the practical skills tests of the Second International Association for the Evaluation of Educational Improvement Science Study conducted in the following countries in the 1980s: (1) Hungary; (2) Japan; (3) Korea; (4) Singapore; (5) Israel; and (6) the United States. (SLD)

The development and administration of practical skills tests in science as part of the Second Science Study of the International Association for the Evaluation of Educational Achievement are described. Scoring and sampling for Hungary, Israel, Japan, Korea, Singapore, and the United States are reviewed. (SLD)

Information is presented about the educational systems of countries participating in the practical skills testing portions of the Second International Association for the Evaluation of Educational Achievement Science Study, drawing on accounts submitted by the participant nations Hungary, Israel, Japan, Korea, Singapore, and the United States.…