Rabu, 08 Juni 2011

cognitive development by jean piaget

Developmental Characteristics of the Learner
The most important factor in teaching and learning in any setting is the learner. Learners
of any age differ from one another in significant ways: Individuals may learn best through
listening or reading, they may learn more easily alone or within a small group, they may
require heavy visual reinforcement or learn better through verbal explanations, or they
may respond better to a sequential or to a random organization of materials or experiences.
Each learner’s experiences differ from those of class peers in a variety of ways.Children
and young adolescents, however, differ from older learners in certain patterned and
predictable ways as they progress through stages of development. An understanding of
these general developmental characteristics is essential for the elementary and middle
school language teacher.
Piaget and Stages of Cognitive Development
The teaching of children has been profoundly affected by the work of Jean Piaget, who
identified four stages of cognitive and affective development in childhood and adolescence.
The child develops cognitively through active involvement with the environment,
and each new step in development builds on and becomes integrated with previous steps.
Because two of the four shifts in developmental stage normally occur during the elemen
tary school years, it is important for language teachers working with children to keep the
characteristics of each cognitive stage in mind (Piaget, 1963). They are as follows:
1. The stage of sensory-motor intelligence (age 0 to 2 years). During this stage, behavior
is primarily motor. The child does not yet internally represent events and “think” conceptually,
although “cognitive” development is seen as schemata are constructed.
2. The stage of preoperational thought (age 2 to 7 years). This stage is characterized by
the development of language and other forms of representation and rapid conceptual
development.Reasoning during this stage is pre-logical or semi-logical, and children tend
to be very egocentric. Children often focus on a single feature of a situation at a time—for
example, theymay be able to sort by size or by color but not by both characteristics at once.
3. The stage of concrete operations (age 7 to 11 years). During these years, the child
develops the ability to apply logical thought to concrete problems. Hands-on, concrete
experiences help children understand new concepts and ideas.Using language to exchange
information becomes much more important than in earlier stages, as children become
more social and less egocentric.
4. The stage of formal operations (age 11 to 15 years or older). During this stage, the
child’s cognitive structures reach their highest level of development. The child becomes
able to apply logical reasoning to all classes of problems, including abstract problems either
not coming from the child’s direct experience or having no concrete referents.
The thinking skills of most children in elementary school are at the concrete operations
stage, and experience plays a major role in all learning. Piaget points out that children
are not simply miniature adults who have less experience and thus less knowledge to
work with as they approach problems and new situations. They do not think like adults
because their minds are not like adult minds. It is the privilege of the elementary school
teacher to share their world and learn to work within it. Characteristics of children as
learners at different ages and implications for language teaching are described next.

The Advantages and Disadvantages of Picture Used


According to Vernon, S. Gerlach and Donald P. (277):
- They are inexpensive and widely available.
- They provide common experiences for an entire group.
- The visual detail make it possible to study subject, which would turn back to be impossible.
- They can help you to prevent and correct disconcertion.
- They offer a stimulus to further study, reading and research visual evidence is power tool.
- They help to focus attention and to develop critical judgment.
- They are easily manipulated.
The Disadvantages of Pictures Used
There are some disadvantages of pictures used in teaching and learning process, such as:
- Students pay attention on the picture more than on learned material.
- It takes time and costs much to provide attractive pictures.
- Small and unclear pictures may arouse problems in the teaching learning process since the students may misunderstand about the pictures.

Types of Pictures

Types of Pictures According to Andrew Wright (1988:12) are:
- Pictures of single object
- Picture  of  person:  picture  of  famous  person,  pictures  of  several  people  and Pictures of people inaction
- Pictures of places
- Pictures from history
- Pictures with a lot of information
- Pictures of fantasies
- Pictures of the news
- Pictures of maps and symbols.
According to Betty Morgan Bowen (1973:13-31), there are some types of pictures as their shapes:
- Wall charts
- Wall pictures:  is simply a large illustration of scenes or events.  It is usually to be used with the whole of class.
- Sequence Picture is a series of pictures of a single subject it is function is tell a story or a sequence of events.
- Flash cards
à Word  Flash  cards;  card with  printed words  on  it  can  help  up  rapidly,  the cards can be used to demonstrate exactly what the teacher wishes.
àPicture Flash cards; useful for the representation of a single concept, such as an object or in action.
- Work cards
  Includes visual as well as text magazine pictures drawing maps and diagrams can be important part or work cards at all levels used for vanity of purposes.
Meanwhile,  Noor  Azlina  Yunus  (198:49) in  his  book  grouped  the  picture  into  four groups:
- Composite Picture
These are large single pictures, which show a scene (Hospital, beach, canteen, Railway station, street) in which number of people can be seen doing things
- A Picture Series
A  picture  series  is  a  number  of  related  composite  pictures  linked  to  form  a series of sequences. Hence, it is main function is to tell a story or sequence of events.
- Individual Picture
These are single pictures of objects, person or activities such pictures very in size from small newspaper pictures and can be mounted singly.
- Specialized Pictures (Posters, charts, advertisements, brochures)  Wall  posters  are  not  designed  specifically  for  teaching,  but  rather  for advertising or propaganda purposes.

Pictures Definition

According to Tang Li Shing (1981:11) “The Picture had an irascible appeal for the children. They created suspense and surprises as well as interest, all of which are indispensable in teaching and learning a foreign language.”

According to Andrew Wright (1989:29), Picture is not just an aspect of method but through its representation of place, object, and people, it is essential part of the overall experiences.
 Vernon, S, Gerlach and Donald P.Emily (1980:273) stated:
“Pictures  are  a  two  dimension  visual  representation  of  person,  places,  or things. Photograph prints are most common, but sketches, cartoons, murals, cut outs, charts, graphs and maps are widely used”.
According to Ruth Gairns and Stuart Redman (1986:103),” Pictures can be formed such: wall charts, commercially- produced flashcards, hand drawn pictures, and of course illustration from course books and supplementary books.”

Types of Vocabulary


Nation (1990:29) has divided vocabulary in the specific reference, such a word.
- Receptive  Vocabulary:  Knowing  a  word  involves  being  able  to  recognize  it  when  it  is heard  (What  is  the sound  like?) or when  it seen  (What does  it  look like?) and  having  an  expectation  of what  grammatical  pattern  the word will occurrence. This includes being able to distinguish it from word with a similar form and being able to judge if the word form sounds right or look right.
- Productive Vocabulary: Knowing a word involves being able to pronounce the word, how  to write and  to spell  it, how  to use  it  in grammatical pattern along with  the word  in usually collocates with  it,  it also  involves not using  the word too  often  if  it  is  typically  a  low  frequency  word  and  using  it  in  a  suitable situation using the word to stand for the meaning it represents and being able to think of suitable substitutes for the word if there any.
Jo Ann Aeborsold and Mary Lee Field (1997:139) Classified Vocabulary into two terms there are:
- Active Vocabulary refers to items the learner can use appropriately in speaking or writing and  it  is also called as productive vocabulary, although,  in fact,  it  is more  difficult  to  put  into  practice.  It  means  that  to  use  the  productive vocabulary,  the students are supposed  to know how  to pronounce  it well,  they must know and be  able    to use grammar of  the  language  target,  they  are also hoped  to  familiar with collocation and understand  the connotation meaning of the words. This type is often used in speaking and writing skill.
- Passive  Vocabulary  refers  to  a  language  items  that  can  be  recognizes  and understood  in  the  context  of  reading  or  listening  and  also  called  as  receptive Vocabulary. Passive Vocabulary or comprehension consists of the words comprehended by the people, when they read and listen.

Definition of Vocabulary

According to Webster’s Ninth Collegiate Dictionary (1978:1320), Vocabulary is:
- A  list  or  collection  of words  and  phrase  usually  alphabetically  arranged  and explained or defined.
- A sum or stock of words employed by a language group individual or work or in a field of knowledge.
- A list or collection of terms or codes available for use.
 There are some experts who give definition of vocabulary, Evelyn Hatch and Cheryl Brown (1995:1) define vocabulary as a list or set of words for a particular language or a list or set of word that individual speaker of language might use.
Furthermore Webster Dictionary (1935:1073) noted that, vocabulary is “A list or collection of words usually alphabetically arranged and explained or lexicon, stock of words use in language or by class, individual, etc.”
While according to Roget (1980:1036), Vocabulary is:
- An  alphabetical  list  of  words  often  defined  or  translated,  the  vocabulary includes idioms and two words verb.
- All the word of Language.
- Specialized expression indigenous to a particular fields, subject, trade or subculture.

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