d. Tests
The pre-test was conducted before the research to get information about the students’ level and score of vocabulary mastery. It could also tell
about the students’ problems in learning the vocabulary. After the research is implemented, there was the post-test. It was conducted to find out if the
implementation of the research brought progress to students’ vocabulary learning by comparing the score of the pre-test and post-test.
3. The Instruments of The Data Collection
In this research, there were several instruments used in documenting the teaching and learning process. They were:
a. Interview Guidelines
Interview guidelines were made to help the researcher to do the interview in a sequenced order. It helped the researcher to prepare the
important questions and to avoid unnecessary points. In addition, it helped the researcher to explore the collaborator’s and students’ view point
towards the action.
b. Observation Checklists
Observation checklists were used to remind the researcher to stick to the plan. It was needed to make sure that the research went well as what
has been planned before. Moreover, the checklists were used to monitor the students’ behavior and the overall classroom condition in every
meeting. It was required because the data in every meeting needed to be compared. The observation checklists were used to decide whether there
were any improvements or not and whether the improvements were significant or not.
c. Vocabulary Tests
These vocabulary tests consisted of a pre-test and a post-test. The pre-test was given to the students before the implementation of the action,
while the post-test was given after the implementation of the action. The tests were both in the form of multiple choices. The tests were used to
measure students’ achievement and progress in their vocabulary mastery.
4. The Techniques of The Data Analysis
The data analysis technique used to analyze the qualitative and quantitative data in this research is adapted from Burns 2010 : 104-105. The
steps of the data analysis technique are:
a. Assembling the data
The researcher collected all the data as well as any ongoing reflection and then looked for broad patterns, ideas, or trends that seemed to
answer the research questions.
b. Coding the data
Based on the broad picture developed, the data were refined into more specific patterns or categories. The researcher should identify which of
the data were quantitative and qualitative.