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UNIT I : NUMBER SYSTEMS

1. REAL NUMBERS (15) Periods

Euclid's division lemma, Fundamental Theorem of Arithmetic - statements after reviewing work done earlier

and after illustrating and motivating through examples, Proofs of results - irrationality of decimal

expansions of rational numbers in terms of terminating/non-terminating recurring decimals.

UNIT II : ALGEBRA

1. POLYNOMIALS (6) Periods

Zeros of a polynomial. Relationship between zeros and coefficients of a polynomial with particular reference

to quadratic polynomials. Statement and simple problems on division algorithm for polynomials with real

coefficients.

2. PAIR OF LINEAR EQUATIONS IN TWO VARIABLES (15) Periods

Pair of linear equations in two variables. Geometric representation of different possibilities of solutions/

inconsistency.

Algebraic conditions for number of solutions. Solution of pair of linear equations in two variables algebraically

- by substitution, by elimination and by cross multiplication. Simple situational problems must be included.

Simple problems on equations reducible to linear equations may be included.

3. QUADRATIC EQUATIONS (15) Periods

Standard form of a quadratic equation ax² + bx + c = 0, (a ≠ 0). Solution of the quadratic equations

(only real roots) by factorization and by completing the square, i.e. by using quadratic formula. Relationship

between discriminant and nature of roots.

Problems related to day to day activities to be incorporated.

4. ARITHMETIC PROGRESSIONS (8) Periods

Motivation for studying AP. Derivation of standard results of finding the nth term and sum of first n terms.

UNIT III : TRIGONOMETRY

1. INTRODUCTION TO TRIGONOMETRY (12) Periods

Trigonometric ratios of an acute angle of a right-angled triangle. Proof of their existence (well defined);

motivate the ratios, whichever are defined at 0^o & 90^o. Values (with proofs) of the trigonometric ratios of

30^o, 45^o & 60^o. Relationships between the ratios.

2. TRIGONOMETRIC IDENTITIES (16) Periods

Proof and applications of the identity sin² A + cos² A = 1. Only simple identities to be given. Trigonometric

ratios of complementary angles.

3. HEIGHTS AND DISTANCES (8) Periods

Simple and believable problems on heights and distances. Problems should not involve more than two right

triangles. Angles of elevation / depression should be only 30^o, 45^o, 60^o.

UNIT IV : COORDINATE GEOMETRY

1. LINES (In two-dimensions) (15) Periods

Review the concepts of coordinate geometry done earlier including graphs of linear equations. Awareness of

geometrical representation of quadratic polynomials. Distance between two points and section formula

(internal). Area of a triangle.

UNIT V : GEOMETRY

1. TRIANGLES (15) Periods

Definitions, examples, counter examples of similar triangles.

1. (Prove) If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct

points, the other two sides are divided in the same ratio.

2. (Motivate) If a line divides two sides of a triangle in the same ratio, the line is parallel to the third side.

3. (Motivate) If in two triangles, the corresponding angles are equal, their corresponding sides are

proportional and the triangles are similar.

4. (Motivate) If the corresponding sides of two triangles are proportional, their corresponding angles are

equal and the two triangles are similar.

5. (Motivate) If one angle of a triangle is equal to one angle of another triangle and the sides including

these angles are proportional, the two triangles are similar.

6. (Motivate) If a perpendicular is drawn from the vertex of the right angle of a right triangle to the

hypotenuse, the triangles on each side of the perpendicular are similar to the whole triangle and to each

other.

7. (Prove) The ratio of the areas of two similar triangles is equal to the ratio of the squares on their

corresponding sides.

8. (Prove) In a right triangle, the square on the hypotenuse is equal to the sum of the squares on the other

two sides.

9. (Prove) In a triangle, if the square on one side is equal to sum of the squares on the other two sides, the

angles opposite to the first side is a right traingle.

2. CIRCLES (8) Periods

Tangents to a circle motivated by chords drawn from points coming closer and closer to the point.

1. (Prove) The tangent at any point of a circle is perpendicular to the radius through the point of contact.

2. (Prove) The lengths of tangents drawn from an external point to circle are equal.

3. CONSTRUCTIONS (8) Periods

1. Division of a line segment in a given ratio (internally)

2. Tangent to a circle from a point outside it.

3. Construction of a triangle similar to a given triangle.

UNIT VI : MENSURATION

1. AREAS RELATED TO CIRCLES (12) Periods

Motivate the area of a circle; area of sectors and segments of a circle. Problems based on areas and

perimeter / circumference of the above said plane figures. (In calculating area of segment of a circle, problems

should be restricted to central angle of 60^o, 90^o & 120^o only. Plane figures involving triangles, simple

quadrilaterals and circle should be taken.)

2. SURFACE AREAS AND VOLUMES (12) Periods

(i) Problems on finding surface areas and volumes of combinations of any two of the following: cubes,

cuboids, spheres, hemispheres and right circular cylinders/cones. Frustum of a cone.

(ii) Problems involving converting one type of metallic solid into another and other mixed problems. (Problems

with combination of not more than two different solids be taken.)

UNIT VII : STATISTICS AND PROBABILITY

1. STATISTICS (15) Periods

Mean, median and mode of grouped data (bimodal situation to be avoided). Cumulative frequency graph.

2. PROBABILITY (10) Periods

Classical definition of probability. Connection with probability as given in Class IX. Simple problems on

single events, not using set notation.

INTERNAL ASSESSMENT 20 Marks

Evaluation of activities 10 Marks

Project Work 05 Marks

Continuous Evaluation 05 Marks

RECOMMENDED BOOKS

1. Mathematics - Textbook for class IX - NCERT Publication

2. Mathematics - Textbook for class X - NCERT Publication

3. Guidelines for Mathematics Laboratory in Schools, class IX- CBSE Publication

4. Guidelines for Mathematics Laboratory in Schools, class X - CBSE Publication