Saxon's Math Intermediate 4 can be used in place of Saxon Math 5/4.

Saxon's incremental lessons provide daily practice and assessment in a "spiral" format; mathematical concepts are taught through informative lessons, diagrams, interactive activities, and investigations that build critical thinking as well as real-world problem solving skills. Saxon Intermediate 4 includes 12 sections, 120 lessons and 12 "investigations" with 1-2 activities each.

Textbook lessons are divided into three sections. The first section is "power-up practice," which is designed to improve speed, accuracy, the ability to do mental math, and the ability to solve complicated problems. The second part of the lesson is the "New Concept," which introduces a new math concept through examples. Thirdly, the "Written Practice" section reviews previously taught concepts through 25-30 problems in each lesson. One "Investigation" per 10-lesson section is included; "Investigations" are variations of the daily lesson and often involve activities that take up an entire class.

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