Reply To: Errata Intro to Mathematics Home › Forums › Nemeth Code for Math and Science › Errata Intro to Mathematics › Reply To: Errata Intro to Mathematics January 23, 2013 at 3:14 pm #21871 Lindy WaltonModerator The errata/addenda to the lesson book is posted on the NFB website--here is the URL:https://nfb.org/math-transcribing**BUT** you may want to wait as a new release is about to be approved. The target date for the update is 2-1-2013.