A green cow sees a glass of old wine. The duck's potato is not dad's potato. Using clever and catchy expressions and charming illustrations, La Mosca Zumba teaches children vocabulary and generates interest in Spanish-language study. Created by sister and brother duo, Lilly Jammes and Ben Jammes, this bilingual book for children shares fun lessons that combine word play and delightful Spanish-language puns. What began as a way to interest Lilly in learning Spanish when she was younger, grew over time as Lilly herself became a teacher of young language learners.