Harrison asks some kids if they know how to spot someone who is lying, then teaches about lie detectors.
Harrison explains Ivan Pavlov's experiment and why humans' stomachs growl when they're hungry.
A look at the various kinds of hats, helmets, and headgear people wear.
On the ice rink, Theo meets Timeo, a speed skating pro.
Theo, who has lost his voice but is still up for a laugh, discovers the joys of cross country with his loyal Clover.
Under a magnificent circus tent, Theo meets the daring Ben and Niels who teach him the art of juggling.
Mister Maker discusses how Andy Warhol did a type of recycling when he created some of his most famous works of art.
Children perform a nativity play in a clip that introduces the significance of Jesus' birth to Christians and the origins of Christmas.
Harrison explains why teeth get yellow and how to remove plaque using brushing and flossing.
Athletic Lucio introduces Theo to the secrets of tumbling.
Thanks to his beautiful friend Kenza, Theo gladly learns the basics of kendo.
Out in the wild, Theo discovers the joys of sporting events, accompanied by the lovely Manon.
Mister Arty journeys back to 1960s New York to explore the work of American pop artist Andy Warhol, and learn about his famous 'Campbell's Soup Cans' screen print.
Under the guidance of the charming Marion, Theo initiates himself into dressage with his horse Clover.
Theo and his loyal steed, Clover, try show jumping with the expert advice of funny and kind Louis.
Theo is unwell and stuck in bed. His funny dad takes over and happily discovers an aquatic sport that he hadn't heard of: kite surfing.
Theo discovers water polo thanks to the invaluable advice of his friend Pauline.