Build rapid, accurate letter‑sound fluency with this set of 18 Rapid Fluency Grids, designed to strengthen automaticity, stamina, and smooth left‑to‑right and top‑to‑bottom tracking. Each grid includes four boxes of mixed letters, increasing in difficulty from early‑introduction letters to full‑alphabet review. These grids follow the simple, predictable routine described in your teacher guide: “Say each sound. Go row by row.” Students read each box left to right, then move to the next row,