The document discusses curriculum compacting for gifted students through pre-assessments. It provides examples of modifying math lessons using powers, operations with dice, and exploring other options to challenge advanced students. Pre-assessments are important to determine what concepts students have already grasped in order to save time and modify the curriculum accordingly. A sample schedule shows how one gifted student's day is compacted by choosing own readings, working on an independent project in math, and participating in higher-level social studies discussions. The value of pre-assessments is emphasized to ensure mastery of basic skills and inform instruction.