Class 9 Computer Science

What IT actually is, data versus information, the convergence of computing and communication, and where IT is used in everyday Indian life.

CPU, memory, input and output devices, primary versus secondary storage, and the bit-to-terabyte units you must convert in the exam.

What an operating system does, the GUI, files and folders, paths and extensions, and safe file handling.

Creating and formatting documents, paragraphs and pages, tables, find and replace, and the shortcuts worth knowing.

Slides, layouts, views, transitions and animations, and the design habits that make a presentation readable.

Cells and ranges, formulas, SUM and AVERAGE, relative versus absolute references, sorting, filtering and charts.

Safe browsing, identity protection, strong passwords, malware, phishing and safe communication on social media.

Sprites, the stage, blocks, sequence, loops, conditionals and variables, and computational thinking without syntax.

Variables and data types, input and output, operators, conditionals and simple loops, with the errors beginners actually hit.