New Delhi: The Central Board of Secondary Education (CBSE) has reduced the syllabus of Class IX by 30 per cent to compensate for the loss of studies due to COVID-19. The revised syllabus for all subjects of CBSE Class IX has been released on the official websites- cbse.nic.in and cbseacademic.nic.in. The syllabus has been reduced for the students of Class X and XI as well.
“The Board has decided to revise the syllabi for Classes 9-12 for the academic session 2020-21. Considering the importance of achieving the level of learning, the syllabus has been rationalised to the extent possible by retaining the core concepts,” said a circular issued by CBSE director (academics), Joseph Emmanuel.
The deleted portion of the syllabus is applicable only for the current academic session.
Here is what has been deleted:
UNIT I-NUMBER SYSTEMS
REAL NUMBERS
·Representation of terminating / non-terminating recurring decimals on the number line through successive magnification.
·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.
·Definition of nth root of a real number.
UNIT II-ALGEBRA
POLYNOMIALS
·Motivate and State the Remainder Theorem with examples. Statement and proof of the Factor Theorem.
·x3+y3+z3-3xyz
LINEAR EQUATIONS IN TWO VARIABLES
·Examples, problems on Ratio and Proportion
UNIT IV- GEOMETRY
INTRODUCTION TO EUCLID’S GEOMETRY
·Delete the Chapter
TRIANGLES
·Proof of the theorem deleted- 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).
·Topic Deleted-Triangle inequalities and relation between ‘angle and facing side’ inequalities in triangles
AREA
·Delete the Chapter
CIRCLES
·There is one and only one circle passing through three given non-collinear points.
·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.
CONSTRUCTIONS
·Construction of a triangle of given perimeter and base angles
UNIT V- MENSURATION
AREAS
·Application of Heron’s Formula in finding the area of a quadrilateral.
UNIT VI- STATISTICS And PROBABILITY
STATISTICS
·Histograms (with varying base lengths), Frequency polygons.
·Mean, median and mode of ungrouped data.
PROBABILITY
·No deletion
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