Textbooks as an Instructional Material
                                                                                aesthetic  factors  are  part  of  the  method.  It  makes  English  skills  become  main priority  in  teaching  English  for  students  in  Curriculum  2013  as  the  activities  in
Curriculum  2013  are  expected  to  make  the  students  exposed  with  the  use  of English language as often as possible with various theme, context, and topic.
The uses of English skills in communication become the main priority for Curriculum  2013  in  term  of  communicative  purposes.  Materials  and  exercises
provided in the textbook should be in line with the curriculum and learners‟ needs.
Further,  in  Curriculum  2013  teachers  should  be  able  to  create  an  enjoyable atmosphere  in  order  to  set  up  the  student-centered  learning  classroom,  which  is
aimed  at  making  the  students  feel  encouraged  to  analyze,  observe  and  generate what they have learned. The
essence of the curriculum and the learners‟ needs still have  to  be  significant  considerations  for  teachers  in  delivering  the  learning
materials from textbook or any other media because students are different one to another.  It  is  important  to  view  language  learning  as  student-centered  because
each student is individual who differs from each other. The objective of communication is to build social relation interpersonal
and  developing  discourse  through  information  exchange  among  the  individuals involved  within  the  communication  transactional  delivered  via  oral  or  written
media.  The  ability  to  communicate  feeling,  knowledge  and  views  among  those involved  in  the  communication  interlocutors  must  be  based  on  their
sociocultural values for the sake of making appropriate communication. The  communication  activities  based  on  this  view  are  the  combination  of
three purposes
of communication:
interpersonal, transactional,
and presentational
.  In  the  systemic  functionalist  view,  the  communication  activities
are  organized  around  the  integration  of  linguistic  rules  cohesive  and  coherent choice of words, phrases, sentences, or utterances and the socio-cultural rules of
the language use applied in various types of oral and written discourse needed by the  language  users  in  certain  communicative  situations  and  scopes  such  as  daily
situation,  working  situation,  education,  and  academic  scope.  The  socio-cultural rules regarding to  the language use covers attitudes in  communication which are
influenced by cross-cultural understanding values. In  Curriculum  2013,  subjects  are  divided  into  two  categories  namely
compulsory  suzbjects  and  elective  subjects.  The  compulsory  subjects  are  those which  are  obligated  to  be  learned  by  all  the  students  in  all  senior  high  schools.
Meanwhile, the elective subjects are those which can be chosen and joined by the students based on their own interest.
The  following  are  the  list  of  compulsory  subjects  and  elective  subjects based on Curriculum 2013.
Table 2.1. The List of Compulsory Subjects Based on Curriculum 2013
Referring  to  the  2013  curriculum,  the  presence  of  textbooks  in  the  teaching process  in  the  classroom  is  very  vital.  Because  of  the  important  roles,
governments  need  to  take  control  of  the  textbook  content,  production,  and distribution, as what  happens in  Indonesia.  Jazadi  2003 states that textbooks in
Indonesia  need  to  pass  several  political  and  also  evaluation  process  to  maintain security.
“The  content  of  books  should  be  in  line  with  and  not  contradictory  to Pancasila
The  State  Philosophy,  UUD  1945  The  1945  Constitution, Government  policies,  national  unity  and  security,  laws,  regulations,
ethics,  and  that  the  content  not  exploits  the  sensitive  issue  of  SARA ethnics,  religions,  race,  and  intergroup  relations.  Judgement  of  this
aspect is made by evaluators coming from Mabes ABRI Armed Forces Headquarter, Kejaksaan agung Office of Attorney General, Lemhanas
National  Defence  Institute  and  Inspectorate  General  of  MOEC Ministry of Education and Culture.
” Jazardi, 2003 Table 2.2. The List of Elective Subjects Based on Curriculum 2013
                                            
                