dogears

and bookmarks…

pic: WorldMegan

entertaining_mathematical_puzzles

Playing with mathematical riddles can be an intriguing and fun-filled pastime -- as popular science writer Martin Gardner proves in this entertaining collection. Puzzlists need only an elementary knowledge of math and a will to resist looking up the answer before trying to solve a problem


Six Easy Pieces

SIX EASY PIECES – Essentials of Physics Explained by Its Most Brilliant Teacher, RICHARD P. FEYNMAN