NCERT Class 9 Mathematics Textbook for Blind Students made Screen Readable by Professor T K Bansal.

This lesson is planned, organized and described by Dr. T K Bansal on May 08 2023 for visually impaired students . All efforts has been made to make the lesson fully accessible and by providing headings, tables and describing figures. The lesson has been so designed that the reader should enjoy reading this lesson and should move forward without any hurdles. The lesson has been thoroughly checked for any mistakes, still if you find any mistakes or have any suggestions to make it better, please write to us at ‘ blind2visionary@gmail.com ‘. Your efforts will be highly appreciated.

Before going any further, it is worth mentioning that in case of science and mathematics, the accuracy of the content is of utmost important, and the person converting the text into accessible format, and describing the figures must be highly qualified and have patience to do the task. You will be glad to know that Dr T K Bansal is M.Tech., PhD. From Indian Institute of Technology, Delhi, a Post Doctoral Fellow from University of Oxford, U.K., and a Former Lecturer of Physics, Indian Institute of Technology, Kharagpur. Moreover, he himself is visually impaired, and hence clearly understand the difficulties faced by the Blind and VI Students. Therefore, be rest assured that the chapters that you are going to get are free from any mistakes, and useful tips have been provided, where ever possible.

“ It is not what you see, how you see it is important.” : T K Bansal.

Table of symbols used in this chapter: