Here are the direct links for each course
Build your own robot (Mechanical Assembly) https://ottoschool.com/en/courses/build/5
Coding with Otto Blockly https://ottoschool.com/en/courses/code/3
Coding with Scratch AI https://ottoschool.com/en/courses/coding-with-scratch/3
Coding with Arduino IDE https://ottoschool.com/en/courses/programming-with-arduino/2
Electronics with Tinkercad Circuits https://ottoschool.com/en/courses/engineer/2
3D modeling with Tinkercad https://ottoschool.com/en/courses/design/1
3D modeling with Fusion 360 https://ottoschool.com/en/courses/3d-modelling-design/2
3D Printing https://ottoschool.com/en/courses/3dprint/4
Artificial Intelligence https://ottoschool.com/en/courses/machine-learning-for-otto/3
Mechanisms https://ottoschool.com/en/courses/mechanisms/1
App design https://ottoschool.com/en/courses/app-design-for-robots/1
Story game https://ottoschool.com/en/courses/discover/2
