Derek visits London to learn about Greenwich Mean Time, while Kim visits the Northern Lighthouse Board. Plus Derek gets creative with sand in Weymouth, and there is a look at how Claudia and Layla got on when they attended the Glasgow Science Festival.

Kim and Megan are in the studio taking a look back at the most popular hobbies in 1995, Camilla visits Glasgow's Tenement House to discover what life was like in the early 20th century, and Cerise creates something sparkly in her workshop.

This week, Derek and Annabel are in the studio looking back at the hobbies everyone had in 2009, Claudia shares some fascinating facts about the human body, while Cerise has been busy in her workshop making good use of old newspapers. And, as always, there is music chosen by school pupils.

This week, the team learn about music and musical instruments. Donald and Kim learn about the piano, Annabel and Johanna find out more about the melodian, while Sara and Megan learn about the fiddle from Iain MacFarlane. Meanwhile, Amy follows Kim as she competes in the final of Young Traditional Musician of the Year 2017.

Kim and Derek are in the studio preparing to celebrate some special national holidays, Joanna from Lewis talks about her hobbies and pupils from Portree Primary School take on the hopper challenge.

De a-Nis meets Chuck the Explorer, Abby from Dunoon talks about her favourite hobbies and pupils from Breasclete Primary School take on the hopper challenge.

Kim, Mark and De a-nis experts Clarence Ce?lmhor, Claudia Von Bunsen and Camilla Devereux Nic a' Ghobhainn choose their favourite features from the current series.

Kim and Derek get into the Christmas spirit on a trip to Edinburgh, pupils from Glasgow Gaelic School are singing Christmas carols and pupils from Glendale Primary School take on the hopper challenge.

Kim finds out about the work of the Northern Lighthouse Board, John Robert from Harris talks about his favourite hobbies and pupils from Riverside Primary School in Stirling take on the hopper challenge.

Historian Camilla Devereux Nic a' Ghobhainn is in Stirling taking a look at some of Scotland's fascinating history, and Laura from Fort William talks about her favourite pastimes. And pupils from Plockton Primary School take on the hopper challenge.

Kim goes beachcombing with her friends Shauna and Lauren, and Shona from Cumbernauld talks about her favourite pastimes. And pupils from Ullapool Primary School take on the hopper challenge.

Annabel learns all about the melodian, while Shane and ?ine from Lochaber talk about their favourite pastimes. Plus pupils from Paible Primary School take on the hopper challenge.

Derek, Kim, Annabel, Megan and Mark are faced with a challenge for this year's Children in Need - to raise money with a bake sale at Glasgow Gaelic School. Kim spends some time with the pupils and Pudsey, and Annabel visits a youth project that receives funding from the charity.

The team prepare for Bonfire Night, Evie from Dingwall talks about her hobbies, and pupils from Sir E Scott School in Harris take on the hopper challenge.

Derek finds out about time at the Royal Observatory in Greenwich, Hannah from Bishopbriggs reveals her pastimes and pupils from Staffin Primary School take on the hopper challenge.

Layla is on hand to help scientist Claudia Von Bunsen at the Glasgow Science Festival, Isla talks about her favourite hobbies, and pupils from Craighill Primary School in Tain take part in this week's Puingean nam Boingean.

Derek is in Stratford-upon-Avon following in William Shakespeare's footsteps, Stella from Bishopbriggs tells us about her favourite hobbies and Rockfield Primary School in Oban attempt the schools' hopper challenge, Puingean nam Boingean.

The first programme in the new series sees two new presenters joining Derek, Annabel and Megan in the studio. Gairloch Primary School are the first to attempt this year's hopper challenge, Puingean nam Boingean, and there is a look back at how the team got on at the Edinburgh International Festival in the company of the Bubbleman.