The document discusses three main models of reading instruction: top-down, bottom-up, and interactive. The top-down model emphasizes meaning and proceeds from whole to part. It believes reading is driven by meaning and the reader's prior knowledge. The bottom-up model emphasizes the written text and proceeds from part to whole. It believes reading is driven by a process of recognizing letters, words, and building meaning. The interactive model recognizes the simultaneous interaction of top-down and bottom-up processes throughout reading. It views reading as an active process dependent on the reader, text, and situation.