New course: HTML and CSS

Matheion is self-study for computer science — structured lessons you can work through on your own, without a live instructor. Every module follows the same rhythm: • Concepts — clear explanations written for solo reading • Examples — worked Python with syntax highlighting • Practice — questions with reveal answers when you are ready • Quiz — multiple-choice check with instant feedback and a saved best score This release includes two courses: • **Introductory Python (MA-PY1)** — 16 guided modules from expressions and control flow through functions, sequences, strings and files, collections, classes, exceptions, modules, iterators and generators, type hints, inheritance, and decorators. • **Java foundations (MA-JAVA0)** — 22 guided sessions from getting started on the JVM through arrays, classes and encapsulation, collections, exceptions, file I/O, inheritance, generics, lambdas, strings, enums, and a midterm-style class-writing drill. Study on iPhone or iPad. All lesson content is included in the app — no account required, no subscription, no in-app purchases. Works offline after install. More computer science tracks are planned for future updates.

• Share — post a lesson or course progress card to Messages, social apps, and more • Improved graded quizzes — clearer feedback and more reliable scoring in every module • Refreshed app icon — full-bleed design on the home screen • Content updates across Introductory Python — clearer explanations and smoother transitions between harder topics