Geometry Assessments for Secondary Teachers (GAST) Classroom Observation Tool

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Instrument Overview

The Geometry Assessments for Secondary Teachers (GAST) Classroom Observation Tool classifies the teaching moves and instructional tasks of teachers according to cognitive demand. It is designed for use specifically within math lessons focused on similarity, congruence, surface area, and volume. It can be used by teacher educators and researchers to identify the quality of math instruction within this domain.

Organization

Topic
Teacher and Leader Development
Collection(s): AIR Student Well-Being
Collection Category(ies)
Educator Practice & Professional Development

American Institutes for Research® partnered with the Annenberg Institute at Brown University to collect instruments related to student well-being.

Tags
Instructional practices,
Learning environments

Content

Grades
6th Grade,
7th Grade,
8th Grade,
9th Grade,
10th Grade,
11th Grade,
12th Grade
Keywords
Schooling ; Teaching ; Classroom Instruction
Languages
English
Respondent
Observer

Administration Information

Length
22 items to be rated across a full lesson.

Access and Use

Contact

Margaret Mohr-Schroeder, mmohr2@uky.edu

Link
https://eric.ed.gov/?id=EJ1161156
Open Access
No
Setting
Classroom

Psychometrics (additional guidance)

Psychometric References

Mohr-Schroeder, M., Ronau, R. N., Peters, S., Lee, C. W., & Bush, W. S. (2017). Predicting student achievement using measures of teachers' knowledge for teaching geometry. Journal for Research in Mathematics Education, 48(5), 520-566. https://doi.org/10.5951/jresematheduc.48.5.0520