This document discusses the importance and process of writing effective instructional objectives. It begins by asking important questions about the purpose of instruction and how student understanding and mastery can be demonstrated and assessed. It then defines objectives according to Bloom as the desired goals of instruction. Key characteristics of good objectives are outlined, and Mager's ABCD model provides a framework for writing objectives specifying the audience, expected behavior, conditions, and degree of mastery. The three domains of learning - cognitive, affective, and psychomotor - are introduced along with examples of action verbs to use for each level of learning within the cognitive domain.