Independent Study Workbook · No. 01
100 questions across 10 units, sequenced from first-pass substitution to layered SAT-style reasoning — built so one careful pass through this workbook is enough to master the topic on your own.
Each question includes a short hint and concept note. Answer to see whether you're right — a full explanation appears immediately below. The printed PDF stays blank for solving on paper, with a compact answer key on the final page.