1. CBSE Class 9 th Mathematics Lab Manual provides the practical knowledge about the subject

2. Activities given in the manual is simple and interactive

3. Each concept, term, definition and formula given in the theory for better understanding

4. Questions in Viva Voce make the concept more clearer

5. Project listed in NCERT Lab Manual have been covered as per the syllabus

6. Step – by – step guidance given for every experiment to understand concepts.

No theory can be proved without experimentation. Conclusions that are observed and verified in real time are authentic and easy to retain. CBSE conducts Practical Exams along with theoretical exam to test the scientific aptitude of students.

CBSE Class 9th, Mathematics Lab Manual has been prepared strictly according to the guidelines. All the activities in this manual have been in simple, lucid and in an interactive manner. The Theory given with each activity gives complete understanding of each concept, term, definition, and formula, etc. Viva Voce questions given with each activity try to make concepts more clear in accordance with the curriculum. Along with the Activity, all the projects listed in NCERT Lab Manual have also been covered.The book serves as the step by step guide for conducting experiments in such a way that students will not need to refer any other book for explanations of the concepts.

Table of Contents

Activities: To construct a square root spiral, to represent some irrational numbers on the number line,To verify algebraic identities, to find the values of abscissa and ordinates of various points given in a Cartesian plane, To find a hidden picture by plotting and joining the various points with given coordinates in the plane, To verify experimentally that if two lines intersect each other, To verify that the sum of angles of a triangle is 180 degree, To verify exterior angle property of a triangle, To verify experimentally the different criteria for congruency of triangles using triangle cut outs, To find the formula for the area of a trapezium experimentally, To verify that the triangles on the same base & between the same parallels are equal in area, To verify that the angles in the same segment of a circle are equal, To verify that the opposite angles of a cyclic quadrilateral are supplementary, etc.List of Projects: To develop Heron’s formula for area of a triangle, Story of π, Chronology of Indian Mathematicians with their contributions, Development of formula for the area of a cyclic quadrilateral,With rectangle of given perimeter, finding the one with a maximum area and with the rectangle of given area, finding the one with least perimeter, Knowledge and classification of solid figures with respect to surface areas and volumes, Generation of Pythagorean triplets, Magic squares, With cuboids of given surface area, finding the one with maximum volume and with cuboids of given volumes, finding one with least surface area, Mathematical designs and patterns, Application of algebra in day-to- day life.