Materials can achieve impact through novelty, variety, attractive presentation, appealing content, and achievable challenge
Materials should help learners feel at ease and self-confident
What is being taught should be perceived by learners as relevant and useful
Materials should require and facilitate learner self-investment
Learners must be ready to acquire the points being taught
Materials should expose the learners to language in authentic use
The learners' attention should be drawn to linguistic features of the input
Materials should provide the learners with opportunities to use the target language to achieve communicative purposes
Materials should take into account that the positive effects of instruction are usually delayed
Materials should take into account that learners differ in learning styles
Materials should take into account that learners differ in affective attitudes
Materials should permit a silent period at the beginning of instruction
Materials should maximise learning potential by encouraging intellectual, aesthetic and emotional involvement
Materials should not rely too much on controlled practice
Materials should provide opportunities for outcome feedback