Codes and riddles are Uncle Norm’s favourite. So, when Alanna and Kevin give him a birthday present that’s locked by a secret code, Uncle Norm can’t wait to figure it out. With some help from a police officer, he learns how traffic lights and signs are just like secret codes – and he gets some ideas about how to open his present.

The Gist: This episode is about patterning and algebra, specifically the notions of colour, shape (geometric) and simple substitution codes.