An IEA-ETS Research Institute Journal

# Table 3 Regression coefficients of instructional variables on schools' mean scores in science

Instructional practice Regression coefficient
Low-achieving countries Medium-achieving countries High-achieving countries
Listen to teacher lecture (LSP) -17.9* (4.2)* -22.11** -25.6*** (-3.5)
Watch teacher demonstrate an experiment (DEI) -12.5* (-5.3) -7.1* -0.1* (7.0)
Memorize facts and principles (FAP) -26.3*** (-6.4) -19.8** -15.6** (4.2)
Use scientific formulas and laws to solve problems (LAW) -8.2 (6.8)* -15.0* -13.4* (1.6)
Review homework (ROH) -12.4 (-4.1)* -8.4* -4.9 (3.5)
Begin homework in class (BHC) 36.0*** (15.4) 20.6** 11.1** (-9.6)
Read science textbooks and other resource materials (TEX) 17.7* (33.0**) -15.3* -15.9*** (-0.6)
Have quizzes or tests (HQT) 16.0** (10.4) 5.6* 11.3* (5.7)
Use computers (COM) 48.3*** (32.9***) 15.4** 7.4** (-8.0)
(b) Inquiry-oriented, constructivist student-centered practices
Make observations and describe what is seen (OBS) 6.2 (8.8) -2.6 -6.4* (-3.8)
Conduct experiments (CEI) 3.8 (7.9) -4.2 -6.9* (-2.7)
Design or plan experiments (PEI) 10.4** (4.2) 6.2 3.4 (-2.8)
Work in small groups on an experiment or investigation (WGO) 3.6 (6.3)) -2.7 -6.3 (-3.6)
Give explanation about what is studied (EOS) -16..5 (8.0)) -24.5*** -16.8*** (7.7)
Work on problems on their own (WPO) 22.6** (22.3*) 0.4 -9.8** (-10.2)
Relate learning to daily life (MDL) -7.6 (5.5) -13.1* -8.6* (4.5*)
1. Note: In parentheses – regression coefficients of the instructional variable with school's affiliation with either low- or high-achieving groups of countries, compared to that in the medium-achieving group.
2. *** = p ≤ .00; ** = p ≤ .01; * = p ≤ . 05.