The collection
24 titles produced and grouped by world. Every book is described in two ways: its text difficulty and its language profile. Never by a single band that labels the child.
Every title shows which letters and letter combinations its texts use, in four grades of difficulty, from 1 (simplest) to 4 (most demanding). A grade-1 text relies on few combinations; a grade-4 text brings in others that earlier grades do not cover.
Vocabulary, syntax, discourse, knowledge and image. Two titles can share the same grade of difficulty and differ in language: the series alternates narrative and information, and grades each dimension separately. The profile describes the text, not the reader.
The series
The series follows Nina the vizcacha across Andean settings. Worlds group titles by setting and cast, and order production. The first world, «The hillside», is complete.
Each title downloads as a PDF from its card. These are first working editions: they have not yet passed testing with readers or community authorization per world. The teacher guide, the «Mi camino» tracker and the title map are under Teacher resources. The materials are in Spanish.