Rational Number Operations Intervention | Tier 3 with Visuals and Manipulatives This comprehensive Rational Numbers Intervention Bundle is designed to support struggling learners in Tier 2 and Tier 3 intervention, RTI, small groups, special education, and reteaching. These classroom-tested resources use explicit direct instruction, visual models, and scaffolded lessons to build deep conceptual understanding of rational number operations. Each unit follows a consistent I Do – We Do – You Do –