3 ms·
Soviet era math problem books? Buy a few reams of paper too!
by TheTrotters 6y ago
Soviet era math problem books? Buy a few reams of paper too!
- Jugurtha 6y agoExactly. I actually did buy reams of paper and quantified my revisions days with how many sheets I had written. I made booklets folding A4 paper longitudinally in half. Easy to put in my back pocket. Solve problems everywhere. It's more economical, too, a lot of paper is not filled with ink if you leave it in A4, and folding it to make A5 doesn't sole the problem (short lines) an is impractical to carry (can't put in back pocket).