The student assembles the first bar.
text: Oh! ok, so...
text: Here, spot and spotted...this is...not.
text: Need to attach it to the end.
text: The part that you are holding in the right hand, you need to flip one of them.
text: No, flip it to the other end.
text: Yeah.
text: Yeah it's symmetric.
text: Ok, so let's start with this...  Too big.