The background of this research is focused on the effective a medium to teach pronunciation especially pronunciation of diphthong. Many students especially students of elementary school have difficulties to pronounce the English words. The difficulties diphthong to pronounce are like ɪə, eə, ʊə, eI, aI,etc.
This thesis discusses the effectiveness of nursery rhymes to facilitate students’ pronunciation of diphthong (an experimental research at the fifth grade of SDN 01 Tembok Luwung Tegal in the academic year of 2012/ 2013). The object of this study is to find out the effectiveness of nursery ryhmes as the medium to teach pronunciation of diphthong at the fifth grade students of SDN 01 Tembok Luwung Tegal..
The research is an experimental research which involved two classes; the experimental class (VA) and the control class (VB). The methods of data elicitation used here were test and documentation. The data were obtained by employing the relevant pre test and post test.
In this data were analyzed. The test of the difference between two groups was measured by employing t- test computation.
After collecting the data, it was found that the pre test average of experimental class was 42.65 and control class was 41.21. While, the post test average of the experimental class was 65.88 and control class were 57.27. Based on the result of calculation t- test is obtained tcount : 2.394 and ttable : 1.669. This shows that tcount > ttable (tcount higher than ttable ). It means that there was significant difference in achievement of preposition between two groups. Since t- test score was higher than t- table, nursery rhymes was an effective medium to facilitate students’ pronunciation of diphthong at SDN 01 Tembok Luwung Tegal in the academic year of 2012/ 2013.
Finally the researcher suggests to the teachers that they may use nursery rhymes as a medium to facilitate students’ pronunciation of diphthong.