Assess students' ability to apply phoneme substitution and deletion to manipulate spoken words in initial, medial, and final positions. Using oral prompts, pictures, or teacher modeling, students will replace or remove a single phoneme to produce a new real word and respond orally. Tasks require phoneme segmentation to identify the targeted sound, accurate substitution or deletion, and immediate oral production; no written spelling is required. Appropriate for advanced K–2 phonemic awareness instruction and diagnostic assessment.