In the post-test, the mean score was 62.28. The lowest score was 30, and the highest score was 90. There was a student who got the lowest score and there
were five students who got the highest score. There was a significant progress in the mean score between pre-test and
post-test see Appendix 13 and 14. The mean score of the post-test was 62.28 which was higher about 34.45 points than pre-test. The improvement can also be
seen from the lowest score and the highest score. For the pre-test, the lowest score was 5 but for the post-test 30. Then, the highest score in the post-test was also
higher than the test before. In the pre-test, the highest score was 70, but for the post-test 90. Considering the result of the pre-test and post-test, we can see that
the students got better achievement after having the learning process using Lego as a learning medium. Therefore, it was said that using Lego as learning medium
in teaching preposition of place was effective in boosting the students‟ mastery of
preposition of place.
4.2.3 Criterion of Assessment
Based on the criterion issued by SDN Donorejo 1 Karangtengah Demak which is called criteria mastery of learning, a student has to have minimum score
of 60 to pass the criterion. The following table shows students criterion on the pre-test:
Table 4.3 The Students’ Criterion on the Pre-Test
No Students’
Code Score Criterion
1 S-R1
10 Failed
2 S-R2
20 Failed
3 S-R3
15 Failed
4 S-R4
25 Failed
5 S-R5
20 Failed
6 S-R6
15 Failed
7 S-R7
20 Failed
8 S-R8
15 Failed
9 S-R9
45 Failed
10 S-R10
10 Failed
11 S-R11
20 Failed
12 S-R12
30 Failed
13 S-R13
20 Failed
14 S-R14
10 Failed
15 S-R15
35 Failed
16 S-R16
20 Failed
17 S-R17
10 Failed
18 S-R18
20 Failed
19 S-R19
5 Failed
20 S-R20
45 Failed
21 S-R21
20 Failed
22 S-R22
30 Failed
23 S-R23
15 Failed
24 S-R24
15 Failed
25 S-R25
25 Failed
26 S-R26
20 Failed
27 S-R27
45 Failed
28 S-R28
35 Failed
29 S-R29
20 Failed
30 S-R30
35 Failed
31 S-R31
5 Failed
32 S-R32
20 Failed
33 S-R33
25 Failed
34 S-R34
30 Failed
35 S-R35
65 Pass
36 S-R36
40 Failed
37 S-R37
35 Failed
38 S-R38
55 Failed
39 S-R39
70 Pass
40 S-R40
60 Pass
41 S-R41
20 Failed
42 S-R42
20 Failed
43 S-R43
50 Failed
44 S-R44
25 Failed
45 S-R45
60 Pass
46 S-R46
30 Failed
The data above show that 42 students got the score under the criteria mastery of learning or about 91.30 of the students failed the test. It could be said
that 4 students or 8.7 of the class fulfilled the criteria mastery of learning. According to the result above, it can be seen that the students still had low
understanding about preposition of place. They had not succeeded yet in learning preposition of place because according to criteria mastery of learning, a student is
said to be successful if they have minimum score 60. The following table displays students criterion on the post-test:
Table 4.4 The Students’ Criterion on the Post-Test
No Students’
Code Score
Criterion
1 S-R1
50 Failed
2 S-R2
50 Failed
3 S-R3
60 Pass
4 S-R4
45 Failed
5 S-R5
60 Pass
6 S-R6
55 Failed
7 S-R7
55 Failed
8 S-R8
50 Failed
9 S-R9
60 Pass
10 S-R10
40 Failed
11 S-R11
90 Pass
12 S-R12
45 Failed
13 S-R13
50 Failed
14 S-R14
50 Failed
15 S-R15
60 Pass
16 S-R16
75 Pass
17 S-R17
30 Failed
18 S-R18
55 Failed
19 S-R19
50 Failed
20 S-R20
75 Pass
21 S-R21
60 Pass
22 S-R22
70 Pass
23 S-R23
70 Pass
24 S-R24
55 Failed
25 S-R25
75 Pass
26 S-R26
60 Pass
27 S-R27
80 Pass
28 S-R28
55 Failed
29 S-R29
55 Failed
30 S-R30
85 Pass
31 S-R31
50 Failed
32 S-R32
60 Pass
33 S-R33
50 Failed
34 S-R34
55 Failed
35 S-R35
90 Pass
36 S-R36
70 Pass
37 S-R37
60 Pass
38 S-R38
75 Pass
39 S-R39
90 Pass
40 S-R40
90 Pass
41 S-R41
65 Pass
42 S-R42
65 Pass
43 S-R43
75 Pass
44 S-R44
55 Failed
45 S-R45
90 Pass
46 S-R46
55 Failed
In post-test, there was an improvement of students who passed the test. The number of students who could pass the test was higher than the test before. In
pre-test, there were only 4 students or 8.7 of the students passing the test, but for the post-test the number of students who passed the test was 25 students or
54.35. It meant that the students who failed in the test decreases from 42 students or 91.30 of the students in the pre-test into only 21 students or 45.65
of the class who failed in the post-test.
4.3 Students’ and Teacher’s Perception on the Use of Lego in