ERIC Number: ED041843
Record Type: Non-Journal
Publication Date: 1969
Reference Count: N/A
The Instrument for the Analysis of Science Teaching: A System for Measuring Teaching Behavior.
Hall, Gene E.
A system of interaction analysis, the Instrument for the Analysis of Science Teaching (IAST, Part 1), and an accompanying sign system (IAST, Part 2) were developed. Originally used to analyze teaching behavior observed in elementary school classrooms where "Science--A Process Approach" was being taught, IAST was later found to be applicable as a research tool and supervisory aid in other curriculum areas and at other levels. Part 1, a 26-category system based on the 10-category Flanders system, includes 10 student, 14 teacher, and two new categories. Data may be treated for the analysis of various tally records, graphs, ratios, matrices, and tactical findings. Part 2 is a 15-item check list designed to measure some of the characteristics considered to be important in teaching elementary science and "Science--A Process Approach" which could not be determined by part 1 alone. Training in using IAST entails approximately 12 hours of discussion and observation practice. Since the validity of the Scott coefficient PI, the customary statistic for calculating observer reliability, appears to decrease as the number of categories in a system increases, a standardized, nationally available recording of teaching behavior (the Suchman recording of an inquiry session available from Science Research Associates) was used in estimating reliability of observers, demonstrating the possibility of establishing a universal reference for estimates of observer reliability. (JS)
Publication Type: N/A
Education Level: N/A
Sponsor: Office of Education (DHEW), Washington, DC.
Authoring Institution: Texas Univ., Austin. Research and Development Center for Teacher Education.