Then "Anotación" could be "Marcado|Señalado|Etiquetado". "Destacar" becomes "Resaltar|Resalcar|Acentuar". "Notas" might be "Apuntes|Comentarios|Registrados". "Comparte" is "Distribuye|Transmite|Propaga". "Recursos" could be "Materiales|Elementos|Herramientas". "Compañeros" might be "Compañeros|Colegas|Amigos". "Docentes" becomes "Profesores|Maestros|Guías". "Fomentar" is "Incentivar|Promover|Estimular". "Aprendizaje colaborativo" is a proper term, so it stays.
- texto -> libro - recursos -> materiales - en -> en - formato -> formato - digital -> virtual - incluyendo -> incluyendo - PDF -> formato PDF descargar libros sm 4 primaria pdf
I need to make sure each replaceable term gets three synonyms, and brand names like SM and PDF remain unchanged. Also, check that the synonyms fit the context correctly. For example, "libros de texto" could become "materiales didácticos", "recursos educativos", "contenidos escolares". Then "Anotación" could be "Marcado|Señalado|Etiquetado"
Wait, "de" in "libros de texto" is a preposition. But "de" is a common word. Let me think of three synonyms for "de". Maybe not possible, but since the user wants synonyms, perhaps use different prepositions if applicable. Alternatively, use "de" again but I might have to keep it. Hmm. Alternatively, the user might accept using the same word if no synonym exists. Let me check the previous example from the history. "Comparte" is "Distribuye|Transmite|Propaga"
"Sin embargo" alternatives: "Aun así|Aunque|Pero". All correct. "Fundamental" could be "esencial|crucial|importante".
3. "¿Dónde descargar libros SM 4 primaria en PDF?" - Leave "SM" as is. Convert "descargar" to "obtener" and other words similarly.
Next, I'll look at "conclusión". Possible synonyms might be "resumen|finalización|conclusión". Wait, "conclusión" is already there, so maybe "resumen|final|cierre". Need to avoid repeating the same word. Let's verify that.