About - Project Euler

Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems. The motivation for starting Project Euler, and its continuation, is to provide a platform for the inquiring mind to delve into unfamiliar areas and learn new concepts in a fun and recreational context.

CodeCombat: Learn to Code by Playing a Game

Learn programming with a multiplayer live coding strategy game for beginners. Learn Python or JavaScript as you defeat ogres, solve mazes, and level up. Open source HTML5 game!

Codewars: Achieve mastery through challenge

Codewars is where developers achieve code mastery through challenge. Train on kata in the dojo and reach your highest potential.

py.CheckiO - Python coding challenges and exercises with solutions for beginners and advanced

py.CheckiO - Python practice online. Improve your coding skills by solving coding challenges and exercises online with your friends in a fun way. Exchanges experience with other users online through fun coding activities.

Coding Games and Programming Challenges to Code Better

CodinGame is a challenge-based training platform for programmers where you can improve your coding skills with fun exercises (25 languages supported)

MIT App Inventor | Explore MIT App Inventor

A New Gallery is coming to MIT App Inventor We are planning on deploying a new MIT App Inventor Gallery in the few next weeks. This new version will have a different look and feel from the current gallery, but will offer enhanced functionality.

Ο Υπολογιστής

Όταν λέμε ότι έχω έναν υπολογιστή ή στη τάξη μου σήμερα αποκτήσαμε ένα υπολογιστή ας δούμε τι εννοούμε, από τι αποτελείται. Ξεκινώντας από την κεντρική έννοια Ηλεκτρονικός υπολογιστής προσπαθήστε να συσχετίσετε άμεσα όσα φαίνονται στα πλαίσια και να τα συνδέσετε.

Blockly Games

Games for tomorrow's programmers. Block-based programming lessons for beginners. Free from Google.