Table 7 Preservice technology teachers’ performance: explaining system concepts (individual)

Pretest

EG (N = 15)

1 (7%)

0 (0%)

1 (7%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

CG (N = 13)

2 (15%)

3 (23%)

2 (15%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

0 (0%)

6 (46%)

0 (0%)

χ²

0.38

3.39

0.38

N/A

N/A

N/A

N/A

N/A

1.04

N/A

p

0.54

0.07

0.54

N/A

N/A

N/A

N/A

N/A

0.31

N/A

Posttest

EG (N = 15)

6 (40%)

2 (13%)

10 (67%)

4 (27%)

2 (13%)

1 (7%)

1 (7%)

1 (7%)

1 (7%)

2 (13%)

CG (N = 13)

3 (23%)

2 (15%)

3 (23%)

1 (8%)

0 (0%)

1 (8%)

1 (8%)

0 (0%)

2 (15%)

1 (8%)

χ²

0.91

0.02

5.32^*

1.71

1.87

0.01

0.01

0.90

0.55

0.23

p

0.34

0.88

0.02

0.19

0.17

0.92

0.92

0.34

0.46

0.63