An educational diagnostician is recommending an explicit and systematic intervention approach for a fifth-grade student with a specific learning disability in mathematics. Which example best represents explicit and systematic instruction that would allow for the student's progress to be monitored?

• A. The student works alone after teacher demonstrates once.
• B. The teacher models several different examples of adding fractions with the student. The teacher then encourages a student to think aloud while adding simple fractions. The teacher provides the student with corrective feedback throughout the activity.
• C. The teacher provides only a list of rules to memorize and assigns many problems.
• D. The teacher uses only discovery-based activities with no modeling.

Answer: (D)

Explicit and systematic instruction uses clear modeling, a predictable sequence, guided practice with feedback, and ongoing progress monitoring. The example that best fits this approach is when the teacher models several different examples of adding fractions, then has the student think aloud while solving, with the teacher providing corrective feedback throughout. This sequence makes the steps explicit, shows multiple ways the skill can be applied, and uses immediate feedback to guide learning, allowing progress to be tracked over time.

One-shot demonstration with independent work misses guided practice and ongoing feedback. Providing only rules to memorize emphasizes memorization over procedural understanding. Discovery-based activities with no modeling leave the student without explicit steps to follow, which is not aligned with systematic instruction.