This Manual is suitable for teachers of children in grades 3 to 7. Or it could be used to teach a course on Vedic Mathematics. So teachers could use it to learn Vedic Mathematics, though it is not suitable as a text for children (for that the Cosmic Calculator Course is recommended). Understanding of mathematics to learn or teach the Vedic system. The mental calculation system mentioned in the book is also known by the same name or as 'Vedic Maths'. It contains a list of mental calculation techniques claimed to be based on the Vedas. Vedic Mathematics is a book written by the Indian monk Swami Bharati Krishna Tirtha and first published in 1965.