Table 1.
Age and gender distribution of students in experimental and control groups
| Age (years) | Experimental group | Control group |
|---|---|---|
| 120 (M = 59, F = 61) | 40 (M = 15, F = 25) | |
| 9 | 19 | 7 |
| 10 | 80 | 24 |
| 11 | 19 | 7 |
| 12 s | 2 | 2 |
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