La caja de galletas is a seven-chapter GCSE Spanish reader that follows fifteen-year-old Marta as she discovers an old biscuit tin hidden beneath her grandmother’s bed. Inside, she finds faded photographs and a forgotten letter from Argentina that reveal the existence of a long-lost great-uncle no one in the family ever mentions. As Marta and her brother Diego uncover decades of hidden secrets, they embark on an emotional journey that explores forgiveness, family identity and the power of reconnecting across generations, proving that even the deepest wounds can heal through honesty and love.

Main themes

Identity and family relationships
Family history and personal identity
Divorce, blended families and different family structures
Friendship, trust and forgiveness
Generations and family traditions
Cultural identity and the Spanish-speaking world
Discrimination, tolerance and respect
Belonging, reconciliation and overcoming the past

Overall, La caja de galletas combines an engaging family mystery with powerful themes of identity, forgiveness and belonging, providing a contextualised reader that repeatedly reinforces the key vocabulary and structures from the AQA GCSE Spanish (8692) Identity, Relationships and Family unit.