On First Sign in:
Your teacher will give you a Class Code or a Class Join link in your email to click when first logging into Tinkercad.
On first login use class code and select Email or Username:
If you were given a code type it into the join class section:
Next select Email or Username:
For the Email or Username type in tinkercad@belridgecollege.wa.edu.au as pictured below and click next:
On the next screen, login with your school username and password:
You should then be logged into Tinkercad and part of the Tinkercad class.