Bilingual Instruction Strategy (BIS) Vocabulary Curriculum for Fourth Grade English Learners

The data for this project consists of curriculum materials developed for a vocabulary intervention. Two parallel sets of instructional products were created: one monolingual (English-only) and one bilingual (English-Spanish). Each curriculum set contains materials designed for structured delivery of explicit vocabulary instruction over six weeks. Types of materials include: * Teacher lesson cards: Step-by-step guidance for instruction, including pre-teaching of vocabulary, purpose-setting for reading, read-aloud prompts, comprehension checks, and closing activities. * Student reading passages: Thematic texts that embed target vocabulary words in context. * Vocabulary cards: Word-by-word instructional supports including (a) the focal word, (b) child-friendly definitions, (c) contextual examples, (d) visual supports (images), and (e) oral repetition prompts. * Vocabulary review cards: Summative review prompts with definitions, images, and opportunities for repetition and extension questions.