Learn how to code computer programs, how to design algorithms that make computers more efficient, and discover what a career in computing could look like.

Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of …

The Hour of Code is a global movement by Computer Science Education Week and Code.org reaching tens of millions of students in 180+ countries through a one-hour introduction to …

Learn how to program drawings, animations, and games using JavaScript and the Processing library, and explore the technologies behind the web as you design webpages with HTML and …

Learn how to use SQL to store, query, and manipulate data. SQL is a special-purpose programming language designed for managing data in a relational database, used by …

Learn AP Computer Science Principles using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of digital data representation, computer …

Basic geometry and measurement This Basic geometry and measurement course is a refresher of length, area, perimeter, volume, angle measure, and transformations of 2D and 3D figures. If …

Khan Academy’s new internet safety course helps you stay safe online with advice from top digital security experts. Learn how to keep you and your family's information secure.

Explore advanced computer science topics from algorithms (how we solve common computing problems and measure our solutions' efficiency), to cryptography (how we protect secret …

গণিত, কলা, কম্পিউটার প্রোগ্রামিং, অর্থনীতি, পদার্থবিদ্যা ...