Piecing together a jigsaw puzzle helps twins Lia and Luís work on spatial skills while solving a mystery. In their second Storytelling Math outing, the excited young Brazilian Americans (who, Crespo mentions in an author's note, speak in a São Paulo accent) receive a puzzle from their Vovó (grandmother) with a secret message and immediately notice that some pieces have one or two straight sides. "It's a clue!" Sorting ensues, as well as matching contours and turning pieces until each one fits. Meanwhile, Mamãe is urging them to hurry ("Rápido!") because they have to leave soon. Where to? The finished puzzle turns out to be a picture of Vovó saying "Até Já!" ("See you soon!").which solves the mystery just in time for a scramble to the airport and a joyful greeting: "Que saudade!" "We missed you too, Vovó!" It's a brief but age-appropriate introduction to spatial skills that will appeal to kids. The olive-skinned twins are visibly lighter than their Mamãe and Vovó--realistic variations in hue--in the simple, sunny art. The final pieces are laid down with a list of Portuguese expressions used in the narrative and an educator's explanation of the math related skills exercised here that features suggestions for enhancement activities.

Intellectual lessons and a glimpse at Brazilian American culture fit seamlessly together. -- Kirkus Reviews.