Lloyd, Hayley and Seren ask Nina to find out how windscreen wipers work.
Three friends ask Nina: How can an X-ray take a picture of my bones?
Nina gets to work to find out the answer to the question: How does the toilet flush...
Fabulous Felix is at hand to help out as Nina takes apart a seatbelt in her worksho...
Tyla asks Nina why slugs live in our gardens.
Louie and Yoko have leaves to gather up in the garden, but they want to go and play...
Little Cook Small pretends to make night-time noises and fools Ben.
Squiglet uses a straight line to a draw a whistling pig called Curly.
Steve Backshall introduces incredible critters who didn't quite make the Deadly 60...
In a special Christmas show, The Saturdays perform their new single.
On the island of Madagascar a group of lemurs are behaving badly.
Piggy in the Middle is fun, but you need other people. Lola has her imaginary frien...
Major Boogie, a tired old tin soldier, enjoys a break from routine on the toy shelf...
The magical tale of Jack and Jill.
Mtambo is training Wilson and Brewster to help out as guides at the safari park.
The Pontipines are out for a walk in the garden and hear lots of noise.
Spud longs to be a woodsman, just like Chip Chipper.
Katy shows some young cooks how to create their own fantastic Fish Triple Decker.
When Mrs Large forgets that she asked the Smarts to lunch, Sebastian saves the day.