The document discusses several principles for adapting teaching materials, including relating materials to objectives, choosing materials students can use effectively, and considering learner needs. It also lists key learner variables like personality, motivation, attitude, aptitude, and preferred learning styles that impact material design. Contextual factors like age, interests, mother tongue, and reasons for learning should be considered when planning. Factors like a country's use of English, available resources, and class environment also affect course planning.

1. Principles in Material Adaptation