This document discusses the author's experiences using ability grouping and differentiated instruction in their classroom. Some key points: 1) The author uses within-class ability grouping, where students are regrouped by ability for certain subjects like math and reading. Groups work at different paces based on their needs and abilities. 2) The author differentiates instruction using various strategies tailored to different learning abilities, including reading, writing, spelling, and math activities. 3) Technology is incorporated to support ability grouping, through interactive websites, writing tools, and math games tailored to different levels.