Pretest | Posttest | |||||||||
Knowledge & Comprehension | Observation & Measurement | Perception of Characteristics as Solution to Problems | Overall Performance in All Categories Taken Together | |||||||
| Control | Experimental | Control | Experimental | Control | Experimental | Control | Experimental | Control | Experimental |
N | 135 | 135 | 135 | 135 | 135 | 135 | 135 | 135 | 135 | 135 |
Mean | 9.53 | 9.09 | 2.53 | 3.48 | 2.64 | 3.51 | 3.48 | 4.87 | 8.84 | 11.33 |
STD | 3.32 | 3.22 | 0.88 | 1. 04 | 0.71 | 0.94 | 1.26 | 0.99 | 3.26 | 3.03 |
Var. | 10.99 | 10.38 | 0.77 | 1.07 | 0.50 | 0.88 | 1.59 | 0.99 | 10.61 | 9.22 |