Abstract:
The objective of the research was to find out the effect of background knowledge
on the students‟ achievement in speaking through student facilitator and
explaining method. The research was conducted in SMP NEGERI 1 SALAPIAN
Jl. Merdeka Tanjung Langkat Kelurahan Tanjung Langkat. The population was
the 2016/2017 second years student consisted of 218 students. The researcher
used cluster random sampling. The sample was taken from two class of
population which consisted of 74 students. The students were dividing into two
group, namely two group pre test – post test design. The experimental group was
taught by using background knowledge on the students‟ achievement in speaking
through student facilitator and explaining method and the control group was
taught by traditional method. The instrument used this research was the oral test.
In scoring the students‟ speaking achievemnt there are five categories evaluation
scale namely vocabulary, comprehension, grammar, pronunciation, and fluency.
The data was analyzed by using t-test formula. The findings showed that the to
value was greater than tt in which to was 15.92 and tt was 1.669 (15.92 > 1.669). It
means that the null hypothesis (Ho) was rejected and the alternative hypothesis
(Ha) was accepted.
