School A

Participants

Experimental Group

Controlled Group

Pre-Test

Post-Test

Pre and Post Test Scores Differences

Pre-Test

Post-Test

Pre and Post Test Scores Differences

1

4

7

+3

6

6

0

2

3.5

4

+1.5

4

5

+1

3

3.5

5.5

+2

1.5

2

+.5

4

6

8

+2

3

3.5

+.5

5

1.5

2.5

+1

.5

.5

0

6

2.5

3.5

+1

2

1

−1

7

3.5

5.5

+2

2

3

+1

8

3

4

+1

2

2.5

+.5

9

4.5

5

+.5

2.5

2

−.5

10

5.5

6

+.5

1

0

−1

11

2.5

3.5

+1

4.5

4

−.5

12

3.5

2.5

−1

1

.5

−.5

13

6

4.5

−1.5

14

4

4.5

+.5

15

3.5

7

+3.5