Pencil, paper and clear instructions help build the ideal treasure map.
Bob is stuck in a runaway hot air balloon and needs clear instructions to land it.
Tee would love a garden that looks as amazing as Mr Og's, but gardens take time to grow.
Teddy gets a lift today as our friends make superstrong lifters!
Princess Purl is going to sleep for a gazillion years unless Bitz can wake her up.
Tee is superexcited when new flat-pack shelving arrives for his room.
The Baron releases a new strain of elephant flu. Can DM and Penfold find the cure?
We're using rubber bands to test how the energy stored can launch paper balls!
Bitz and Bob have to rescue Purl from the clutches of Pirate Bevelbeard and his shipmates.
It's a cold day and Tee wants to play outside. Mo tells him to put on plenty of layers.
We're exploring friction by racing toys on different surfaces!
A climb up Mount Robo-Bob is interrupted by the appearance of abominable snow monsters.
It's bathtime, but Tee wants one more game with his favourite toy, Action Ape!
Today we're designing plastic-bottle cars to put to the test on our obstacle course.
A race across the desert slows to a crawl when Bitz and Purl over-engineer their vehicle.
Mo wants to take a new photo of Tee, but Tee isn't interested in posing for the camera.
How check lists can help get paper planes flying and balloon-car races on track.
Bob's go-kart becomes a no-go-kart when it starts falling apart during a race.
Tee's friend Lily the Tiger comes round to play her favourite game, Surprise!
Join us as we make conveyor belts - perfect for getting toys from one point to another!
Bitz is desperate for famous chef Madame Gourmet to taste her yummy Bitz mix marmalade.
Mo needs to go to the shops, but Tee would rather build a rocket out of cardboard boxes.
Cute kittens are infiltrating positions of authority all around the world.
We're exploring how engineers lift things, by testing a homemade counterbalance lift.
Bob wants his castle to be like Bitz's, but things don't go to plan with Bevel in charge.
Mo is excited to receive a new lamp, but Tee is more interested in the box it came in.
When Dagur comes to Dragon's Edge looking for Heather, Hiccup tries to keep them apart.
Rachel and the team learn how to mirror each other on the football pitch.
When Tee gets involved in cake-making, he inevitably ends up with cake on his face.
A distant cousin of the twins named Gruffnut arrives on Dragon's Edge.
The riders discover that Viggo is using two captured dragons to build a prison.
Hiccup and Toothless are captured and must escape the Dragon Fighting Arena.
After the riders save a deathsong egg, they must take it back to Melody Island.
The Riders try to stop Viggo from selling dragons and stealing all the gold in Berk.
Astrid comes down with the scourge of Odin and the Riders must search for the cure.
The Dragon Riders discover that Windshear doesn't play well with others.