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
The third questionnaire was administrated to the students after the implementation  of  the  developed  materials.  It  was  aimed  at  finding
students’ opinions about the developed materials. There were 20 questions in the questionnaire.
a.  Validity For  the  validity  measures,  the  researcher  used  construct
validity.  To  obtain  the  construct  validity,  the  researcher consulted the outline of the questionnaire to the first supervisor
to know whether or not the questionnaire was capable of giving the information about students’ opinions towards the developed
materials.  The  researcher  took  some  questions  related  to  the
students’  profile,  the  relation  between  the  goals  of  the developed  materials  and  students’  needs,  the  contents  of  the
developed materials, the varieties of the tasks and activities, the clarity  of  the  instructions,  and  the  general  layoutof  the
developed  materials  Nunan,  2004;  Harmer,  2001;  Brown, 2001.  Here  below  is  the  organization  of  the  third
questionnaire.
Table  5:  The  Blueprint  of  the  Third  Questionnaire  for Implementation
The purpose of the question
The content of the question
Item number
References
To find information about
students’ profile   Name
  Age   Sex
Part A Masuhara via
Tomlinson 1998: 240
To find information to
evaluate the relation between
the developed materials and the
students’ needs   The  goal  of
the materials
 Students’
1, 2, 4, 7, 9, 13, 18
Nunan 2004: 175
To find information to
evaluate the quality od the
developed materials and
  Content   Variety of
tasks and activities
  Clarity of the
3, 5, 6, 8, 10, 11,
14 Brown 2001:
142 Nunan 2004:
175 Harmer
1992: 279
activities instructions
To get information about
the students’ opinions related
to the format of the developed
materials   Typesetting
  Illustrations   General
layout 12, 15,
16, 17, 19, 20
Brown 2001: 142
b.  Reliability There were three steps conducted to show the reliability of
the questionnaire. First, the questionnaire was administrated to 23  students  as  the  subject  of  the  study.  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.
4. Observation Guide