RTI Resource 1: Fuchs, LS Mathematics Intervention at the Secondary Prevention Level of the Multi-Level Prevention System: Six Key Principles. Retrieved from rtinetwork.org. The article examines and describes the six instructional principles that mathematics interventions at the Tier 2 level must incorporate in an effort to assist struggling students and close the achievement gap. The first principle, instructional explicitness, was created in response to the fact that students with mathematical disabilities benefit from explicit instruction in which teachers explicitly share the information students need to learn (Fuchs). The second principle, instructional design that facilitates the challenge of learning, aims to eliminate misunderstandings by using precise explanations and carefully sequenced and integrated instructions; and uses the assistance of a tutor in an effort to minimize a student's learning challenges and provides a set of foundational skills for students to apply (Fuchs). The third principle, a strong conceptual basis for the procedures taught, is often overlooked causing confusion, gaps in learning, and an inability to retain and integrate previously mastered content, which leads to the fourth principle, exercise and practice (Fuchs). Drill and practice should contain cumulative review, the fifth principle, which builds on previously taught core skills and the use of mixed problem types (Fuchs). The sixth and final principle, motivators to help students regulate their attention and behavior and work hard, includes tangible reinforcers that must be included to help students who have often experienced failure and therefore no longer try because of fear of fail (Fuchs). Any math teacher can use these... middle of the paper... ions to master individual skills on a weekly basis. Using this approach, teachers let individual student achievement guide lesson planning and review needs on a weekly basis instead of waiting until the end of a section or unit. More information can be found on the Research Institute on Progress Monitoring and the National Center on Student Progress Tracking websites and links to additional articles on monitoring progress within a multilevel prevention system, as well as linking progress monitoring results to interventions on the RTI website. RTI Resource 1: Fuchs, LS Mathematical Intervention at the Secondary Prevention Level of the Multi-Tiered Prevention System: Six Key Principles. Retrieved from rtinetwork.org.RTI Resource 2: Fuchs, LS 2011. Validated forms of progress monitoring in reading and mathematics. Retrieved from rtinetwork.org.