Library / Mathematics / 1001 tasks for mental calculation / Braille
1001 tasks for mental calculation ⠃⠗⠋ braille edition
Grade 2 — contracted English braille (EBAE-compatible subset). Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 1 instead.
Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt
54,919 braille cells · 55 embossed pages at 40×25 · 102,116 unrepresentable characters omitted
⠼⠙⠓⠀⠲⠀⠀⠼⠁⠋⠀⠀⠲⠀⠀⠀⠀⠀⠦⠀⠼⠃⠊⠀⠲⠀⠀⠀⠀⠼⠃⠚⠲⠀⠀⠀⠼⠑⠀⠲ ⠀⠀⠼⠁⠃⠀⠀⠀⠀⠼⠁⠊⠀⠲⠀⠀⠼⠁⠋⠀⠀⠲⠀⠀⠀⠀⠀⠦⠀⠼⠁⠛⠀⠲⠀⠀⠀⠀ ⠼⠃⠁⠲⠀⠀⠀⠀⠼⠋⠚⠀⠲⠀⠀⠲⠀⠀⠀⠀⠀⠦⠀⠼⠃⠁⠊⠀⠲⠀⠀⠀⠀⠼⠃⠃⠲⠀⠀⠀ ⠼⠊⠚⠚⠀⠲⠀⠀⠼⠁⠊⠀⠀⠀⠀⠼⠁⠊⠀⠲⠀⠀⠼⠛⠀⠀⠀⠲⠀⠀⠀⠀⠦⠀⠼⠛⠛⠀⠲⠀ ⠼⠃⠉⠲⠀⠀⠼⠊⠀⠲⠀⠀⠼⠃⠁⠀⠀⠀⠀⠼⠃⠁⠀⠲⠀⠀⠼⠁⠛⠀⠀⠲⠀⠀⠀⠀⠀⠦⠀ ⠼⠃⠛⠀⠲⠀⠀⠀⠀⠼⠃⠙⠲⠀⠀⠀⠼⠃⠚⠀⠲⠀⠀⠼⠋⠉⠀⠀⠀⠀⠼⠃⠛⠀⠲⠀⠀⠼⠃⠉ ⠀⠀⠲⠀⠀⠀⠀⠀⠦⠀⠼⠁⠉⠀⠲⠀⠀⠀⠀⠼⠃⠑⠲⠀⠀⠀⠀⠂⠀⠀⠦⠀⠼⠁⠙⠙⠚⠆⠀ ⠼⠁⠚⠚⠓⠚⠀⠀⠀⠀⠼⠃⠋⠲⠀⠀⠀⠀⠦⠀⠀⠀⠀⠦⠀⠼⠁⠃⠓⠚⠆⠀⠼⠉⠓⠙⠚⠀⠀⠀ ⠼⠃⠛⠲⠀⠀⠀⠀⠦⠀⠀⠀⠀⠦⠀⠼⠃⠙⠚⠚⠚⠆⠀⠼⠙⠃⠚⠚⠚⠀⠀⠀⠀⠼⠃⠓⠲⠀⠀⠀ ⠼⠁⠊⠀⠀⠀⠀⠼⠃⠙⠀⠲⠀⠀⠼⠁⠛⠀⠀⠲⠀⠀⠀⠀⠀⠀⠼⠁⠚⠚⠚⠀⠲⠀⠀⠀⠀⠦⠀ ⠼⠉⠃⠀⠲⠀⠀⠀⠀⠼⠃⠊⠲⠀⠀⠀⠀⠀⠶⠀⠶⠀⠦⠀⠼⠓⠛⠋⠚⠀⠀⠀⠀⠼⠉⠚⠲⠀⠀⠀ ⠼⠁⠑⠀⠲⠀⠀⠀⠀⠀⠀⠀⠼⠛⠊⠀⠀⠂⠀⠀⠀⠀⠀⠀⠲⠀⠀⠀⠦⠀⠼⠁⠊⠀⠲⠀⠀⠀⠀ ⠼⠉⠁⠲⠀⠀⠀⠼⠋⠊⠀⠀⠲⠀⠀⠀⠀⠼⠃⠚⠀⠲⠂⠀⠀⠀⠀⠀⠀⠀⠼⠁⠀⠲⠀⠀⠀⠀⠦⠀ ⠼⠃⠊⠀⠲⠀⠀⠀⠀⠼⠉⠃⠲⠀⠼⠃⠀⠀⠼⠃⠀⠀⠼⠃⠀⠲⠀⠀⠀⠦⠀⠼⠁⠉⠚⠀⠀⠀⠀ ⠼⠉⠉⠲⠀⠀⠀⠀⠀⠀⠼⠊⠋⠁⠀⠲⠀⠀⠀⠀⠀⠀⠀⠀⠦⠀⠼⠉⠁⠀⠀⠀⠀⠼⠉⠙⠲⠀⠀⠀ ⠂⠀⠀⠀⠀⠀⠀⠀⠲⠀⠀⠀⠼⠙⠀⠲⠀⠀⠀⠀⠀⠀⠦⠀⠼⠃⠑⠀⠲⠀⠀⠀⠀⠼⠉⠑⠲⠀⠼⠛ ⠀⠀⠼⠛⠀⠀⠼⠛⠀⠲⠀⠀⠀⠦⠀⠼⠑⠁⠁⠀⠀⠀⠀⠼⠉⠋⠲⠀⠼⠊⠀⠀⠼⠊⠀⠀⠼⠊⠀⠲ ⠀⠀⠀⠦⠀⠼⠋⠑⠛⠀⠀⠀⠀⠼⠉⠛⠲⠀⠀⠀⠀⠀⠶⠀⠀⠼⠙⠓⠚⠀⠶⠀⠀⠼⠉⠋⠀⠀⠲⠀ ⠦⠀⠼⠙⠚⠀⠀⠀⠀⠼⠉⠓⠲⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠼⠁⠛⠀⠲⠀⠼⠁⠀⠲⠀⠀⠀⠀⠀⠀ ⠦⠀⠼⠃⠀⠲⠀⠼⠙⠉⠀⠲⠀⠀⠀⠀⠼⠉⠊⠲⠀⠀⠼⠁⠀⠀⠼⠁⠀⠀⠶⠼⠃⠙⠀⠶⠀⠀⠀⠀ ⠼⠛⠀⠲⠀⠀⠀⠦⠀⠼⠛⠃⠀⠀⠀⠀⠼⠙⠚⠲⠀⠀⠀⠀⠀⠼⠁⠀⠀⠼⠃⠀⠀⠼⠁⠀⠲⠀⠀⠀ ⠼⠃⠉⠀⠲⠀⠀⠀⠀⠦⠀⠼⠃⠉⠀⠀⠀⠀⠼⠙⠁⠲⠀⠀⠀⠼⠁⠃⠀⠀⠀⠀⠀⠼⠉⠛⠀⠲⠀⠀ ⠼⠁⠊⠀⠀⠀⠀⠀⠼⠃⠙⠀⠲⠀⠀⠀⠦⠀⠼⠊⠀⠲⠀⠀⠀⠀⠼⠙⠃⠲⠀⠀⠀⠼⠁⠓⠀⠀⠀⠀ ⠼⠁⠓⠀⠲⠀⠀⠼⠃⠋⠀⠀⠀⠀⠼⠃⠋⠀⠲⠀⠀⠀⠀⠦⠀⠼⠁⠚⠀⠲⠀⠀⠀⠀⠼⠙⠉⠲⠀⠀ ⠼⠃⠛⠀⠀⠀⠀⠼⠉⠛⠀⠲⠀⠀⠼⠛⠛⠀⠀⠀⠀⠼⠁⠉⠀⠲⠀⠀⠀⠀⠦⠀⠼⠃⠚⠀⠲⠀⠀⠀
These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.