Speech to Persuade Speech to Entertain
28 scope. This research investigated an activity in a Class which is the
implementation of impromptu speech practice. Moreover, Cohen Manion 1989 state that a case study work comes under the heading of evaluation.
Therefore, the aim of this research was to evaluate the implementation of impromptu speech practice.
In gathering the data, the researcher used more than one source of data. Rosman and Rallis 1998 mention that qualitative research uses multiple methods
that are interactive and humanistic. The researcher used triangulation strategy by using multiple source of data survey, interview, and observation in order to
minimize researcher‟s bias Miles Huberman, 1984. Furthermore, in order to convey the idea that establishes a fact, researchers needed more than one source of
information Bogdan Bicklen, 2003. Creswell 2007 also adds that the involvement of multiple sources of information is suggested in order to grab the
complete illustration of the phenomenon being investigated and it is allowed the triangulation as an important aspect in the qualitative study. The strategies and
instruments for data collection used by the researcher were survey distributing questionnaire, interview formal and informal, and observation as it is suggested
by Cohen, Manion, and Morison 2011.