Maravillas, a fully equitable Spanish Language Arts program, supports students as they become bilingual, biliterate, and bicultural. Instructional plans, themes, skills, strategies, and test preparation mirror those of the core Wonders program. With a wealth of authentic literature ranging across the Spanish-speaking world, Maravillas gives students equity of access to rich texts and rigorous instruction. Language Development BLMs are part of the Language Development Kits. Language development cards and BLMs provide practice and offer extra support in non-transferable and transferable Spanish grammar skills, as well as additional instruction and practice in oral and written grammar skills. It has been designed to be used with the grammar and spelling lessons in the Maravillas Teacher's Edition.