. Identify and describe the three key parts of a behavioral objective. 2. Identify and describe the three learning domains. 3. Describe what developmental activities of a lesson are. Provide some examples of how developmental activities are delivered. 4. Identify and describe three resources or factors to consider when planning a unit. 5. Identify and describe three components of a unit plan. 6. Identify three ways that teachers can prepare lessons using guidelines from the SIOP Model.