Class 9 CBSE Board Maths
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UNIT I:
NUMBER SYSTEMS
1. REAL NUMBERS (18) Periods
. Review of representation of natural numbers, integers, and rational numbers on the number line. Rational numbers as recurring/ terminating decimals. Operations on real numbers. 2. Examples of non-recurring/non-terminating decimals. Existence of non-rational numbers (irrational numbers) such as , and their representation on the number line. Explaining that every real number is represented by a unique point on the number line and conversely, viz. every point on the number line represents a unique real number. 3. Definition of nth root of a real number. 4. Rationalization (with precise meaning) of real numbers of the type and (and their combinations) where x and y are natural number and a and b are integers. 5. Recall of laws of exponents with integral powers. Rational exponents with positive real bases (to be done by particular cases, allowing learner to arrive at the general laws.
UNIT II: ALGEBRA
1. POLYNOMIALS (26) Periods
Definition of a polynomial in one variable, with examples and counter examples. Coefficients of a polynomial, terms of a polynomial and zero polynomial. Degree of a polynomial. Constant, linear, quadratic and cubic polynomials. Monomials, binomials, trinomials. Factors and multiples. Zeros of a polynomial. Motivate and State the Remainder Theorem with examples. Statement and proof of the Factor Theorem. Factorization of ax2 + bx + c, a ≠ 0 where a, b and c are real numbers, and of cubic polynomials using the Factor Theorem. Recall of algebraic expressions and identities. Verification of identities:
2. LINEAR EQUATIONS IN TWO VARIABLES (16) Periods
Recall of linear equations in one variable. Introduction to the equation in two variables. Focus on linear equations of the type ax + by + c=0.Explain that a linear equation in two variables has infinitely many solutions and justify their being written as ordered pairs of real numbers, plotting them and showing that they lie on a line.
UNIT III: COORDINATE GEOMETRY COORDINATE GEOMETRY (7)
The Cartesian plane, coordinates of a point, names and terms associated with the coordinate plane, notations.
UNIT IV: GEOMETRY
1. INTRODUCTION TO EUCLID'S GEOMETRY (7) Periods
History - Geometry in India and Euclid's geometry. Euclid's method of formalizing observed phenomenon into rigorous Mathematics with definitions, common/obvious notions, axioms/postulates and theorems. The five postulates of Euclid. Showing the relationship between axiom and theorem, for example: (Axiom) 1. Given two distinct points, there exists one and only one line through them. (Theorem) 2. (Prove) Two distinct lines cannot have more than one point in common.
2. LINES AND ANGLES (15) Periods
1. (Motivate) If a ray stands on a line, then the sum of the two adjacent angles so formed is 180 and the converse.
2. (Prove) If two lines intersect, vertically opposite angles are equal.
3. (Motivate) Lines which are parallel to a given line are parallel.
3. TRIANGLES (22) Periods
1. (Motivate) Two triangles are congruent if any two sides and the included angle of one triangle is equal to any two sides and the included angle of the other triangle (SAS Congruence).
2. (Prove) Two triangles are congruent if any two angles and the included side of one triangle is equal to any two angles and the included side of the other triangle (ASA Congruence)
3. (Motivate) Two triangles are congruent if the three sides of one triangle are equal to three sides of the other triangle (SSS Congruence).
4. (Motivate) Two right triangles are congruent if the hypotenuse and a side of one triangle are equal (respectively) to the hypotenuse and a side of the other triangle. (RHS Congruence)
5. (Prove) The angles opposite to equal sides of a triangle are equal. 6. (Motivate) The sides opposite to equal angles of a triangle are equal.
4. QUADRILATERALS (13) Periods
1. (Prove) The diagonal divides a parallelogram into two congruent triangles.
2. (Motivate) In a parallelogram opposite sides are equal, and conversely.
3. (Motivate) In a parallelogram opposite angles are equal, and conversely.
4. (Motivate) A quadrilateral is a parallelogram if a pair of its opposite sides is parallel and equal.
5. (Motivate) In a parallelogram, the diagonals bisect each other and conversely.
6. (Motivate) In a triangle, the line segment joining the mid points of any two sides is parallel to the third side and in half of it and (motivate) its converse.
5. CIRCLES (17) Periods
1.(Prove) Equal chords of a circle subtend equal angles at the center and (motivate) its converse.
2.(Motivate) The perpendicular from the center of a circle to a chord bisects the chord and conversely, the line drawn through the center of a circle to bisect a chord is perpendicular to the chord.
3. (Motivate) Equal chords of a circle (or of congruent circles) are equidistant from the center (or their respective centers) and conversely.
4.(Prove) The angle subtended by an arc at the center is double the angle subtended by it at any point on the remaining part of the circle.
5.(Motivate) Angles in the same segment of a circle are equal.
6.(Motivate) If a line segment joining two points subtends equal angle at two other points lying on the same side of the line containing the segment, the four points lie on a circle.
7.(Motivate) The sum of either of the pair of the opposite angles of a cyclic quadrilateral is 180° and its converse.
UNIT V: MENSURATION
1. AREAS (5) Period
Area of a triangle using Heron's formula (without proof)
2. SURFACE AREAS AND VOLUMES (17) Periods
Surface areas and volumes of spheres (including hemispheres) and right circular cones.
5 UNIT VI: STATISTICS & PROBABILITY STATISTICS (15) Periods
Bar graphs, histograms (with varying base lengths), and frequency polygons.
Number System
Polynomial
Coordinate Geometry
Linear Equations in Two Variables
Introduction to Euclid Geometry
Lines and Angles
Triangles
Circles
Construction
Heron's Formula
Surface Area and Volume
Statistics
Probability
Modules
Number System
25 attachments • 2 hrs
Number System Ncert Text Book
27 pages
Exercise 1.1
Insert rational number between two number@sonikaanandacademy
insert five rational numbers between 3 / 5 and 4 /5
Exercise 1.2
Ex 1.2 NCERT Text Book Que 1 Que 2
Exercise 1.2 how to draw an irrational number on a number line@sonikaanandacademy
Concept Base Lecture How to Draw Number line
Exercise 1.3
Terminating and non terminating decimal @sonikaanandacademy
Terminating and non terminating decimal@ sonikaanandacademy
Conversion of recurring decimal to fraction @sonikaanandacademy
How to convert irrational number to rational number @sonikaanandacademy
Ex 1.5
How to add and subtract Irrational Number @sonikaanandacademy
How to add irrational numbers that is how to simplify airrational numbers
Ex 1.6 @sonikaanand academy
how to convert a irrational number to rational number
Rational and irrational numbers @,sonikaanandacademy
Test Papers
Test Paper 1
1 page
Test Paper 2
1 page
Test Paper 3
2 pages
MCQ 1
MCQ 2
Polynomial
18 attachments • 3 hrs
Polynomials Ncert Text Book
23 pages
Exercise 2.1@sonikaanandacademy
Exercise 2.2 @sonikaanandacademy
Exercise 2.3 @sonikaanandacademy
Exercise 2.4 @sonikaanandacademy
Exercise 2.5
Exercise 2.5 continued part 1@sonikaanandacademy
Exercise 2.5 continued part 2 @sonikaanandacademy
Algebraic expressions and identities @sonikaanandacademy
Lesson in one shot @sonikaanandacademy
#polynomial class 9 maths #sonikaanandacademy
Verify Zero of polynomial
Find zero of polynomial
Find unknown quantities
Test Papers
Test Paper 1
1 page
Test Paper 2
1 page
Test Paper 3
1 page
Coordinate Geometry
5 attachments • 33 mins
Coordinate Geometry Ncert Text Book
15 pages
Exercise 3.3 @sonikaanandacademy
Coordinate Geometry How to draw graph part 1@sonikaanandacademy
coordinates geometry graph part 2 @sonikaanandacademy
Lesson in one shot @sonikaanandacademy
Linear Equations in two Variables
6 attachments • 58 mins
Linear Equations in Two Variables Ncert Text Book
12 pages
Exercise 4.1 @sonikaanandacademy
Exercise 4.2 @sonikaanandacademy
Exercise 4.3 @sonikaanandacademy
Exercise 4.3 Que 8 @sonikaanandacademy
How to draw graph @sonikaanandacademy
Introduction to Euclid Geometry
2 attachments • 18 mins
Euclid geometry @sonikaanandacademy
Introduction to Euclid Geometry Ncert Text Book
11 pages
Lines and Angles
19 attachments • 2 hrs
Lines and Angles Ncert Text Book
20 pages
Exercise 6.1
Exercise 6.1 Que 1 @sonikaanandacademy
Exercise 6.1 Que 2 @sonikaanandacademy
Exercise 6.1 @sonikaanandacademy
Exercise 6.1 Que 3@sonikaanandacademy
Exercise 6.1 Que 5@sonikaanandacademy
Exercise 6.1. Que 6 @sonikaanandacademy
Exercise 6.2
Exercise 6.2 Q 1@sonikaanandacademy
Exercise 6.2 Que 2 @sonikaanandacademy
Exercise 6.3
Exercise 6.3. Que 1 # Sonikaanand academy
Exercise 6.3 Que 2 @sonikaanandacademy
Exercise 6.3 Que 3 @sonikaanandacademy
Exercise 6.3 Que 4 @sonikaanandacademy
Exercise 6.3 Que 5 @sonikaanandacademy
SUMMARY
Lines and Angles @sonikaanandacademy
Triangles
19 attachments • 1 hrs
Triangles Ncert Text Book
26 pages
Triangles -Introduction
Exercise 7.1 Que 1@sonikaanandacademy
Exercise 7.1 Que 2@sonikaanandacademy
Exercise 7. 1 Que 3 @sonikaanandacademy
Exercise 7.1 Que 4 @sonikaanandacademy
Exercise 7.1 Que 5 @sonikaanandacademy
Exercise 7.1 Que 6@sonikaanandacademy
Exercise 7.1 Que 7@sonikaanandacademy
Exercise 7.1 Que 8 @sonikaanandacademy
Exercise 7.2
Exercise 7.2 @sonikaanandacademy
Exercise 7.2 Que 7 @sonikaanandacademy
Exercise 7.3
Exercise 7.3 Q ue 1@sonikaanandacademy
Exercise 7.4
Exercise 7.4 Que 1 @sonikaanandacademy
Concept Base Lectures
Triangles||Inequality @sonikaanandacademy
Circles
13 attachments • 50 mins
Circles Ncert Text Book
20 pages
Exercise @sonikaanandacademy
Exercise 10.2
Exercise 10.2 Que 1@sonikaanandacademy
Exercise 10.2 Que 2 @sonikaanandacademy
Exercise 10.4
Exercise 10.4 Que 1 @sonikaanandacademy
Exercise 10 .4 Que 2 @sonikaanandacademy
Exercise 10.5
Exercise 10.5 Que 1 @sonikaanandacademy
Exercise 10.5 Que 3 @sonikaanandacademy
Exercise 10.5 Que 4@sonikaanandacademy
Exercise 10.5 Que 5 and Que 6 @sonikaanandacademy
Construction
8 attachments • 23 mins
Construction Ncert Text Book
9 pages
Exercise 11.1
How to draw a perpendicular bisector@sonikaanandacademy
construction of 135° @sonikaanandacademy
Exercise 11.2
Exercise 11.2 Que 4 ||@sonikaanandacademy
when difference of two sides are given ||construction @sonikaanandacademy
when sum of two sides are given @sonikaanandacademy
Herons Formula
11 attachments • 1 hrs
Heron's Formula Ncert Text Book
11 pages
Concept Base Lecture
Herons formula@sonikaanandacademy
Exercise 12.1
Exercise 12 .1 Que 1@sonikaanandacademy
Exercise 12. 2
Exercise 12.2 Que 1 To Que 5 @sonikaanandacademy
Exercise 12.2 Que 1 and Que 2 @sonikaanandacademy
Exercise 12.2 Que 5 @sonikaanandacademy
Exercise 12.2 Que 6 ,Que 7 ,Que 8@sonikaanandacademy
Exercise 12.2 Que 9@sonikaanandacademy
Surface Area and Volume
47 attachments • 2 hrs
Surface Areas and Volumes Ncert Text Book
30 pages
Exercise 13.1
Exercise 13.1 Que 1@sonikaanandacademy
Exercise 13.2 Que 2 @sonikaanandacademy
Exercise 13.1 Que 3 @sonikaanandacademy
Exercise 13.2
Exercise 13.2 Que 1@sonikaanandacademy
Exercise 13.2 Que 2 @sonikaanandacademy
Exercise 13 .2 Que 10 @sonikaanandacademy
Exercise 13.2 Que 11 @sonikaanandacademy
Exercise 13.3
Exercise 13 .3 Que 1@sonikaanandacademy
Exercise 13.3 Que 2@sonikaanandacademy
Exercise 13.3 Que 3@sonikaanandacademy
Exercise 13.3 Que 4 @sonikaanandacademy
Exercise 13.3 Que 5 @sonikaanandacademy
Exercise 13.3 Que 6 @sonikaanandacademy
Exercise 13.4
Exercise 13.4 Que 1 to Que 6 @Sonika
Exercise 13 .4 Que 7 , Que 8 , Exercise 1.3 Que 9 @sonikaanandacademy
Exercise 13.5
Exercise 13.5 Que 8 @sonikaanandacademy
Exercise 13.6
Exercise 13 .6 Que 1 @sonikaanandacademy
Exercise 13.6 Que 2@sonikaanandacademy
Exercise 13.6 Que 3 @sonikaanandacademy
Exercise 13.6 Que 4 @sonikaanandacademy
Exercise 13.6 Que 5 @sonikaanandacademy
Exercise 13.6 Que 6@sonikaanandacademy
Exercise 13.6 Que 7 @sonikaanandacademy
Exercise 13.6 Que 8 @sonikaanandacademy
Exercise 13.7
Exercise 13.7 Que 1@sonikaanandacademy
Exercise 13.7 Que 2 @sonikaanandacademy
Exercise 13.7 Que 4 @sonikaanandacademy
Exercise 13.7 Que 6@Sonika Anand Academy
Exercise 13.7 Que 7 @sonikaanandacademy
Exercise 13.7 Que 9 @ Sonika Anand Academy
Exercise 13.7 Que 10 @sonikaanandacademy
Exercise 13.8
Exercise 13.8 Que 1 @sonikaanandacademy
Exercise 13.8 Que 2 @sonikaanandacademy
Exercise 13.8 Que 3 @sonikaanandacademy
Exercise 13.8 Que 4 @sonikaanandacademy
Exercise 13.8 Que 5 @sonikaanandacademy
Exercise 13.8 Que 6 @sonikaanandacademy
Exercise 13.8 Que 7@sonikaanandacademy
Statistics
6 attachments • 45 mins
Statistics Ncert Text Book
33 pages
Introduction@sonikaanandacademy
How to draw Histogram@sonikaanandacademy
How to drwa a Bar graph @sonikaanandacademy
how to draw a frequency polygon ||statistics @sonikaanandacademy
How to find mean median mode @sonikaanandacademy
Probability
2 attachments • 10 mins
Probability Ncert Text Book
15 pages
Exercise 15 .1 class 9 Maths @sonikaanandacademy
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