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The primary goal of instructional design is improving the quality of learning and instruction. Instructional designers have focused on a number of areas of critical concern and developed a variety of techniques to achieve this goal (Reigeluth, 1983, 1999). Critical areas of concern for those who plan, implement and manage instruction include (a) needs assessment (identifying gaps or deficiencies in knowledge and performance to be addressed in instruction); (b) task analysis (identifying the types of knowledge, skills and attitudes to be developed during instruction); (c) learner analysis (determining who the learners are, what they know, relevant differences, etc. ); (d) instructional strategies (developing strategies appropriate for the task and learners involved); and (e) assessment and evaluation (determining how to assess individual progress and evaluate programs).