It's next to impossible to tune out of a MSSL lesson. Multisensory structured language programs are structured, systematic, and cumulative . Different multisensory structured language programs have slightly different sequences or emphases, and some leave more instructional details to the teacher than others. All of them are cumulative. There is extensive review and additional direct instruction in applying and generalizing concepts and skills, which is often especially challenging for students with learning difficulties.
Humans retain much, much more information and can use it much, much better if it is organized.
While multisensory structured language programs vary a bit in what they emphasize, they have many elements in common. These are technical terms for how the phonics of reading is learned. Many learners either do have this skill already, or pick up this skill from phonics programs, but some need to be taught the phonemic awareness skills explicitly and directly. Reading and spelling are intertwined, though spelling skills almost invariably develop much more slowly than reading skills. When the student knows the individual symbols and the sounds they represent, they learn the predictable syllable patterns.