this slide is about the topic of material evaluation which is the third step in esp process or in the field of English for specific purpose.

2. Definition
materials evaluation means a principled process of
providing useful information about the targeted materials
in order to select and/or develop them in a reliable and
valid approach.

3. What is the needfor material evaluation ?
To identify the popular and successful features of existing materials, which
will help us to produce better materials. To choose suitable materials for
language programmes. To adapt the materials to make them better suit the
needs of the students and the needs of teaching.

4.  To identify the popular and successful features of existing
materials, which will help us to produce better materials.
 To choose suitable materials for language programmes.
 To adapt the materials to make them better suit the needs of
the students and the needs of teaching.
 To identify how successful the materials used in the classroom
are.
 To examine whether the materials fulfil the prescribed course
 To examine the extent to which materials permit students to
achieve learning objectives.
 To identify whether the designs of the materials are suitable
for a task-based syllabus.
Why do we evaluate materials?

5. There are two principles in materials evaluation: effectiveness and efficiency (Ellis 1998 in Tomlinson 1998).
Effectiveness principle:
Compare what the learners knew and were able to do before they used the course book with what they
know and are able to do after they have used the book;
Efficiency principle:
Compare the learning gains evidenced by using one course book with the gains evidenced by another
course book.