Maddie's Do You Know?

CBeebies

Sunday 28 July 2019  11:10 - 11:25 (15 mins)
16/25. Maddie uses a special camera and animation to see how a key works inside a lock and shows how the hidden barrel and pins allow the matching key to unlock it. [S]

Maddie's Do You Know? (CBeebies) Sunday 28 July 2019 11:10 - 11:25