The aim of this research was to know whether mnemonic acronym was
effective or not in teaching gerund at SMK N 2 Purwokerto. The method used was
quasi experimental method. The population of this research was the eleventh
grade of SMK N 2 Purwokerto. The writer chose two classes as samples, XI TP 3
as experimental class and XI TP 1 as control one. The research was done from
18th until 29 th July 2011.
The writer used pre-test and post-test to find the data. t-test was used to
analyze the result of pre-test and post-test. Having analyzed the data, the writer
revealed that the student’s mastery in experimental class was higher than control
one. There was a positive effect in teaching gerund through mnemonic acronym at
SMK N 2 Purwokerto. The t-test result was 3.64 and t-table in degree of freedom
62 at the significant level 0.05 was 1.670. The hypothesis was accepted because ttest
was higher than t-table (3.64 > 1.670). It means that mnemonic acronym is
effective for teaching gerund.