常见问题What is user ID? And why do I need it?
After you have completed the user registration, you can go to your profile and to create an USER ID and password. You can use this ID instead of your email to log in, the reason we provide this is to let your kid to use USER ID and you can keep the email log in for yourself. The Password for USER ID does not need to be the same as your email log in.

Why do we use it?
it helps kids to build a habit of creativity which involves several key steps : own the issue, communicate with other about the issue, gather the idea to design, put them in implementation

Where does it come from?
it came from a Chinese educator (fēng zǐ kǎi)(1898-1975)