Do You Know?

CBeebies

Monday 4 March 2019  16:25 - 16:40 (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]

Do You Know? (CBeebies) Monday 4 March 2019 16:25 - 16:40