: Municipalities, Autonomous Communities, and relief/climate maps.
If you are looking for practice materials rather than the main textbook, these links provide specialized PDF content:
Conocimiento del medio 4º Primaria (PDF) Zubia | Digital book
: Systems like digestion, circulation, and respiration.
: This is the official portal for teachers to preview current projects like Construyendo Mundos (LOMLOE). You can view catalogs and sample units for 4th Grade Primary here.