“Constitution Day (Día de la Constitución) marks the anniversary of a referendum held in Spain on December 6, 1978. In this referendum, a new constitution was approved . This was an important step in Spain’s transition to becoming a constitutional monarchy and democracy.”
https://www.timeanddate.com/holidays/spain/constitution-day
To celebrate such an important date for Spain, students in the second year of primary school have colored the Spanish coat of arms and have made a puzzle to reflect that we all form Spain.