The author refers to the big picture because materials:

Materials development has been considered as important in language teaching since the 50's

Taking into account the different processes that can be operated in materials. We can say that materials can be:

Materials are defined as: " anything that [blank_start]facilitates[blank_end] the [blank_start]learning[blank_end] of a [blank_start]language[blank_end]"

In materials evaluation, Cunningsworth (1995) stresses the importance of determining criteria relevant to the target learners.

According to Materials Evaluation sub-title, the proposal of Tucker was:

Good teachers are always adapting the materials, they are using to the context in which they are, just in order to achieve the optimal congruence between:

When behaviourism was the dominant force in physocology and learning theory, most of extra funds from 1958 Act went directly into this behaviorist inspired methodologist to the use of drills, substitution tables.

Accordinng to Ritzer, there are a standardization of materials design and centralization of them. This is according to the term: