Mathematics is an indispensable subject area in the school education because of its wide application in our day today activities as well as in different fields of education. Access to quality education in Mathematics is very important for each and every learners. Mathematics is an important discipline of learning at the Secondary stage. The present course in Mathematics has been divided into 26 lessons/chapters from six modules namely Algebra, Commercial Mathematics, Geometry, Mensuration, Trigonmetry and Statistics. Text Materials, Audio and Video programmes are provided for your better learning. The assessment has been provided you in each lesson for your self assessment purposes.