When I was in my teens, I used to have a big box of Lego. Based on thousands of simple Lego pieces, I built my world of knights, wizards, princesses，explorers, pirates and monsters. Decades later, as ...

LEGO SPIKE is a great educational system for kids to learn the secrets of programming and robot building. The shortcoming of the system is that the program code cannot be tested conveniently. In order ...