THEORY OF LOGARITHM SURDS: MEANING OF RATIONAL AND IRRATIONAL NUMBERS LEADING TO THE DEFINITION OF SURDS APPLICATION OF SURDS TO TRIGONOMETRICAL RATIOS MATRICES AND DETERMINANTS LINEAR AND QUADRATIC EQUATION WORD PROBLEMS LEADING TO ONE LINEAR-ONE QUADRATIC EQUATION; SURFACE AREAS AND VOLUME OF SPHERES AND HEMISPHERICAL SHAPE LATITUDE AND LONGITUDE: IDENTIFICATION OF NORTH AND SOUTH POLES...