Alpha Cronbach formula was used to find the reliability coefficient of the questionnaire.
2. Second Questionnaire
The second questionnaire was intended for some experts after the developed materials the first draft are ready. It was used to know the
respondents opinion about the developed materials. There were 20 items in the questionnaire.
a. Validity For the validity requirements, the researcher also used the
construct validity. For that, the outline was consulted to the first supervisor to know whether or not the questionnaire gives
information about experts’ opinion towards the developed materials. Some references were used to relate to experts’ profile,
the contents of the developed materials, the sequence of the materials, the clarity of the instructions, the general layout, and the
goal of the developed materials Brown, 2001; Hutchinson and Waters, 1987; Tomlinson, 1998. The organization of the second
questionnaire can be seen below.
Table 4: The Blueprint of the Second Questionnaire for Expert Judgment
The purpose of the question
The content of the question
Item number
References
To find information about experts’
Name Age
Part A Masuhara
via
profile Sex
Educational
Background Tomlinson
1998: 241
To get information about
experts’ opinions on the
quality of the developed
materials Contents
Sequence Instructions
4, 5, 6, 8, 9, 11, 17
Brown 2001:
142 Hutchinson
and Waters 1987
Ellis via Tomlinson
1998: 235
To get information about experts’
opinions related to the format of the
developed materials
Typesetting Illustrations
General layout 10, 13,
14, 15, 19, 20.
Brown 2001:
142
To find information about experts’
opinions related to the relevance
among materials, and the syllabus
Goal Methodology
1, 2, 3, 7, 12, 16,
18, Brown
2001
b. Reliability To find out the reliability of the questionnaire, the
researcher administrated the questionnaire to some experts. There
were five experts who gave comments to the developed materials. They were two experts of materials of English For Children and
three Elementary English teachers. There were three steps conducted to show the reliability of the questionnaire. First, the
questionnaire was administrated to the experts. There are 5 possible points; 5 points for Strongly Agree SA, 4 points for
Agree A, 3 points for Neutral N, 2 points for Disagree DA, and 1 point for Strongly Disagree SA. Second, the questionnaires
were recapitulated after all the questionnaires were given back to the researcher. Third, the Alpha Cronbach formula was used to find
the reliability coefficient of the questionnaire.
3. Third Questionnaire
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