In most Indian classrooms, teachers write on the blackboard or whiteboard at a pace faster than students can copy. This is common in Mathematics, Physics, and Chemistry, where formulas and derivations are written step-by-step. Students who are slow writers, or those seated in back rows who cannot read clearly, end up with incomplete or incorrect notes. This happens multiple times every school day across government and private schools. Students who miss key steps in a derivation fail to understand the concept entirely, leading to poor exam performance. Even well-intentioned students fall behind not due to lack of effort but due to a physical mismatch between the teachers writing speed and the students copying speed. There is no existing low-cost mechanism for a student to pause or slow down board writing without interrupting the entire class. The problem affects an estimated 70-80% of students in a typical class of 40 every single day. No life-threatening risk is involved, but the educational harm accumulates over years. Students who consistently have incomplete notes lose confidence and disengage from learning, which has long-term academic consequences.