The depth-of-knowledge levels of Norman Webb’s depthof-knowledge (DOK) levels constitute a system that addresses how to teach these skills. Depth of knowledge is a scale of cognitive demand that reflects the complexity of activities that teachers ask students to perform.
DOK-1. Recall — Recall or recognition of a fact, information, concept, or procedure
DOK-2. Basic Application of Skill/Concept — Use of information, conceptual knowledge, follow or select appropriate procedures, two or more steps with decision points along the way, routine problems, organize/ display data
DOK-3. Strategic Thinking — Requires reasoning, developing a plan or sequence of steps to approach problem; requires some decision making and justification; abstract and complex; often more than one possible answer
DOK-4. Extended Thinking — An investigation or application to real world; requires time to research, think, and process multiple conditions of the problem or task; non-routine manipulations, across disciplines/content areas/multiple sources Level 1 of DOK is the lowest level and requires students to recall or perform a simple process.As DOK increases toward the highest (fourth) level, the complexity of the activity moves from simple recall problems to increasingly difficult and teacher independent problem-solving classroom activities, as well as real-world applications.As students are prompted to work within the realms of higher DOK levels, they will learn to independently employ higher-level thinking skills.