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The Psychology of Arithmetic ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

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536,202 braille cells · 555 embossed pages at 40×25 · 8,503 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.