Ah yes the little mathematics library :) I had a book or two from this series but never really got into them. Was more into Perelman's books on puzzles and ridd

Ah yes the little mathematics library :) I had a book or two from this series but never really got into them. Was more into Perelman's books on puzzles and riddles at that age. And speaking of pocket science books, my favorite is [1] 'Straight Lines and Curves'. Accessible to high schoolers with quirky illustrations and introduces many interesting concepts. [1] https://mirtitles.org/2013/10/21/straight-lines-and-curves-vasilyev-gutenmacher/ https://mirtitles.org/2013/10/21/straight-lines-and-curves-v...