Criterion of Assessment The Effectiveness of Lego in Boosting Students’ Mastery of

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