MBLOCK Examples
A set of simple examples to learn to how to program the MBOTs. A good place to start.
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PROGRAMO-ERGO-SUM
A good place to start both teaching and learning robotics and programming in an easy way. The site is only in Spanish.
Bee-Bot Emulator
If you use the Bee-Bot robots in class you may introduce them first using this emulator. If you don't have them, it's an excellent tool to have a VIRTUAL one. Highly recommended.