- 12 th mathematics can be studied with conceptual clarity and understandings of the basics from an experienced teacher . I do understand this thing and prepare my students with enough practice and make them sure and confident about each chapter and topics , so that well before the final exam , they should feel so ease and mentally relaxed . The understanding of the basics from the grass root level make them realise whence the formulae come . Mocking up the formulae is not required at all for my students . I do make my students solve each and every question from the entire book , so that in the final exam they could make it a great success and also having sound knowledge in mathematics helps one to perform better in other subjects like physics and chemistry, mostly the complecated derivations can be well understood if one understands the basics and he/she performs the best . With this motto i have been teaching for more than 7 years