Episodes categorised as 'Learning: Pre-School' available now on BBC iPlayer

41/50. Nok Tok and Yojojo chase a beautiful leaf all over Nara.

Big and Small each have four of their favourite biscuits, but Big eats his all at once.

10/50. Yojojo chases after a beautiful big bubble and tries to stop it from bursting.

19/40. Miss Mouse and Teddington go off to the seaside, but Miss Mouse forgets her sun hat.

9/20. Number 4 flies out to defeat the Puzzler.

148/200. David Tennant reads Small Mouse Big City, by Simon Prescott.

40/50. Yojojo and the other Piplings play jumping games with a Jumpybug.

22/26. Ruby challenges Big and Small to be quiet and accident free for just one day.

Max shows the Tweenies how to make bumblebees.

9/50. The cheebies help Nok Tok build his most useful invention ever.

12/26. Katy shows some young cooks how bananas grow and then they make Spiced Banana Pudding.

18/40. Chris and Pui help Tom make a card for Stuffy's birthday, with the help of the Choo Choose

147/200. David Tennant reads How High is the Sky? By Anna Milbourne and Serena Riglietti.

39/50. Yojojo plays his pipes to charm a firefly out of a tree hollow and into his paper lantern.

What happens when everyone in dirtgirlworld swaps jobs?

Cyfres o chwedlau a storiau i blant 3-7 oed. Tales and legends for 3-7 year olds.

21/26. Big tries to beat the record for swinging without stopping, for two days and two nights.

8/50. Lau Lau puts some bananas in a bowl to paint. Bananas are weak-willed Yojojo's favourite.

11/26. Katy shows young cooks how basil grows, and how to make delicious Tomato Spirals.

17/40. Grandad Stuffy comes to visit the playroom, but loses his glasses.

146/200. David Tennant reads Miki, by Stephen Mackey.

38/50. De Li rests under a plumato tree and a plumato falls in her lap.

One morning dirtgirl decides to surprise all her friends ... with a present!

20/26. When Big goes out for the night Small insists on having Twiba as a babysitter!

7/50. De Li discovers a sad looking plant that hasn't flowered, so she tries to make it happy.

10/26. Some young cooks discover how spaghetti is made and create their own Baked Spaghetti.

16/40. Miss Mouse loses a shoe and is worried she won't be able to dance at the ball.

37/50. The Piplings all play Narabug Chase, but then the Narabugs disappear up into the trees.

7/26. Big is very sad when he loses his favourite toy, but does Small know where it is?

25/54. Penelope waits expectantly for Santa on Christmas Eve.

32/40. Mo Mo Bot searches for a musical instrument that toots.

4/10. Tyla asks Nina why slugs live in our gardens.

14/20. In the Cosy Room, 0 and 1 are failing to help 3 sort her beautiful things into groups.

145/200. Tom Ward reads How Big is a Million? By Anna Milbourne and Serena Riglietti.

36/50. Lau Lau tries to make a sound by dancing on different surfaces.

6/26. Big and Small find a new friend living in an apple - a sassy but warm-hearted worm.

28/54. Penelope's family gather together to celebrate Christmas.

31/40. Chris and Pui have a race with cars around the playroom.

13/20. Numberjack 1 plays tricks on Numberjack 4, always making the seesaw unbalanced.

144/200. Emilia Fox reads Tiny Rannosaurus and Big Footasaurus, by Nick Ward.

35/50. When Nok Tok's measuring stick is broken, he thinks he is growing taller.

The magical tale of Jack and Jill.

Nature detective dirtgirl is on a walkabout - a nature walkabout.

8/20. Number 6 flies out to battle with the Problem Blob.

Skipper takes Nature Chris on a walk in a peat bog with Green Balloon Club Member, Jake.

19/26. Big and Small decide to spring clean the house, but they keep getting distracted.

Louie and Yoko have leaves to gather up in the garden, but they want to go and play.

6/50. After seeing Lau Lau whistle, Nok Tok tries to learn how, but finds it hard work.

9/26. Katy shows some young cooks how to create their own fantastic Fish Triple Decker.

15/40. Toddler Tom goes out exploring in his jungle and finds lots of wild animals.

7/20. Numbers 4 and 3 are in the gym when 5 discovers that Spooky Spoon is causing trouble.

Green Balloon Club members Matthew and Eoin show us their pet fire-bellied toads.

142/200. Emilia Fox reads Penguin Post, by Debi Gliori.

6/20. Things are changing length, so the Numberjacks send Brain Gain to change them back.

The team are packing birthday presents for the bears.

Lily-Rose, Ant and Cat help the keepers prepare meals for the zoo animals.

It's Jelly's first time in a sailing boat when she goes exploring on Strangford Lough.