Opticians & Glasses | Maddie's Do You Know👩Series 2, Episode 5 | FULL EPISODE!

👩Join Maddie as she finds out how things work!
As seen on CBeebies: www.bbc.co.uk/...
Maddie's Do You Know? is a series for young children in which sees Maddie Moate explores the workings of everyday objects, by asking how they are made or how they work?
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