Explicit Direct Instruction
Explicit Direct Instruction, usually shortened to EDI, is a strategic collection of instructional practices combined together to help teachers design and deliver well-crafted lessons that explicitly teach content, especially grade-level content, to all students. EDI is based on teacher-centered, direct instruction philosophy. EDI is an approach that encompasses our goal of improving learning for all students and especially for low-performing students.
EDI – The Well-Crafted, Well-Taught Lesson
An EDI lesson always includes specific lesson design components and lesson delivery strategies. It always includes continuous Checking for Understanding to verify that students are learning during the lesson. Well-crafted EDI lessons have a goal of 80% of students achieving 80% correct answers during Independent Practice. EDI lesson design components and lesson delivery strategies are independent of grade level and content. The figure on the right shows a graphical representation of Explicit Direct Instruction. You can see the lesson design components of a well-crafted EDI lesson, starting with a Learning Objective and ending with Lesson Closure. After Lesson Closure, teaching has ended, and students are ready for Independent Practice. On the outside, surrounding the design components, you can see the lesson delivery strategies including, for example, Checking for Understanding. The lesson delivery strategies are not specific to any design component and are used throughout the lesson.
EDI Lesson Design Components
- Learning Objective: A statement describing what students will be able to do by the end of the lesson. It must match the Independent Practice.
- Activate Prior Knowledge: Purposefully moving something connected to the new lesson from students' long-term memories into their working memories so they can build upon existing knowledge.
- Concept Development: Teaching students the concepts contained in the Learning Objective.
- Skill Development: Teaching students the steps or processes used to execute the skills in the Learning Objective.
- Lesson Importance: Teaching students why the content in the lesson is important for them to learn.
- Guided Practice: Working problems with students at the same time, step-by-step, while checking that they execute each step correctly
- Lesson Closure: Having students work problems or answer questions to prove that they have learned the concepts and skills in the Learning Objective before they are released to work on their own.
- Independent Practice: Having students successfully practice exactly what they were just taught.
EDI Lesson Delivery Strategies
- Checking for Understanding – TAPPLE, Rephrase, Apply, Justify, Higher order questions
- Teaching strategies – Model, Explain, Demonstrate
- Rule of Two: Teacher models the thinking to solve a problem, and the student immediately works on a similar problem. “I do, you do.”
- Content Area Literacy
- Comprehensible Input (modified speech, clear academic tasks, multi-modality)
- Contextual clues (Contextualized definitions, gestures, visual aids, graphic organizers, word banks, etc.)
- Academic, content, and support vocabulary development