12 Materials should take into account that learners differ in affective attitudes. 13 Materials should permit a silent period at the beginning of instruction.
14 Materials  should  maximize  learning  potential  by  encouraging  intellectual, aesthetic and emotional involvement which stimulates both right and left brain
activities. 15 Materials should not rely too much on controlled practice.
16 Materials should provide opportunities for outcome feedback.
4. Task-Based Language Teaching TBLT
a. Definition of Task
When the tasks are transformed from the real world to the classroom, they become  pedagogical  in  nature.  Richards,  Platt  and  Weber  in  Nunan,  1989:  6
define a pedagogical task as
”
“....an activity or action which is carried out as the result of processing or understanding language  i.e. as a response.  For  example, drawing a map
while  listening  to  a  tape,  listening  to  an  instruction  and  performing  a command may be referred to as tasks. Tasks may or may not involve the
production of language. A task usually requires the teacher to specify what will be regarded as successful completion of the task. The use of a variety
of  different  kinds  of  tasks  in  language  teaching  is  said  to  make  language teaching  more  communicative  .  .  .  since  it  provides  a  purpose  for  a
classroom activity which goes beyond the practice of language for its own sake.
” From this definition, tasks are defined in terms of what the learner will do
in class rather than in the world outside the classroom Nunan, 2004:2. Nunan 2004:4 also states that a pedagogical task is:
“…a  piece  of  classroom  work  that  involves  learners  in  comprehending, manipulating,  producing  or  interacting  in  the  target  language  while  their
attention is focused on mobilizing their grammatical knowledge in order to
express  meaning,  and  in  which  the  intention  is  to  convey  meaning  rather than  to  manipulate  form.  The  task  should  also  have  a  sense  of
completeness, being able to stand alone as a communicative act in its own right with a beginning, a middle and an end.
” Skehan 1988, in Nunan 2004: 3 puts forward five key characteristics  of
a task. They are : -  meaning is primary;
- learners are not given other people’s meaning to regurgigate;
-  there is some sort of relationship to comparable real-world activities; -  task completion has some priority;
-  the assessment of the task in terms of outcome.
b. Components of Task
Nunan 2004:41 proposes a simple model of a minimum specification of task as represented in the diagram below.
Goals Teacher role
Input TASK
Learner role Procedures
Settings ‘Goals’ are the vague, general intentions behind any learning task. They provide a
link  between  the  task  and  the  broader  curriculum.  ‘Input’  refers  to  the  spoken, written and visual data that learners work with in the course of completing a task.
Data can be provided by a teacher, a textbook or some other source. ‘Procedures’
specifies  what  learners  will  actually  do  with  the  input  that  forms  the  point  of departure for the learning task. ‘Role’ refers to the part that learners and teachers