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The Central Board of Secondary Education (CBSE) conducts practical examination for Class X students. This laboratory manual has been designed to help Class X students prepare for Activities, Projects and Viva Voce for Mathematics. The present book for CBSE Class X Mathematics Activities, Projects and Viva Voce has been divided into two parts namely Activities (Term I & Term II) and List of projects covering the syllabi of Term I and Term II. The Activities (Term I) section covers activities like To construct a square root spiral, to represent some irrational numbers on the number line, To verify exterior angle property of a triangle, to verify experimentally the different criteria for congruency of triangles using triangle cut outs, etc. whereas the Activities (Term II) covers 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, To form a cuboid & find the formula for its surface area experimentally, To form a cone from a sector of a circle, To obtain the formula for the surface area of a sphere, etc. The Projects section covers To develop Heron’s formula for area of a triangle, Extensions of Phythagoras Theorem, Magic Squares, Mathematical designs & patterns, Ramanujan number, Mathematical crosswords, Application of geometry in day-to-day life, Golden rectangle & golden ratio, Knowledge & classification of solid figures with respect to surface areas & volumes, etc.As the book cum laboratory manual covers all the experiments and viva voce, it for sure will help Class X students prepare their best for CBSE Class X Mathematics Practical Examination.