Post-it note

Post-it Super Sticky Notes Ordinary sticky notes curl off glossy textbook pages and drop off walls. These have twice the sticking power of basic sticky notes, according to the maker, and are made to hold on walls, doors and windows. That makes them the better choice for a wall of formulas or a pathway diagram you build one note at a time and rearrange as it starts to make sense. They still remove cleanly, so they will not tear a page when the exam is over. Keep one concept per note and the wording short: if it will not fit on a 3 x 3 inch square, it probably belongs on an index card.