S1 E35 | The T-Ball Problem; The Bus Problem

E40 | The Bermuda Triangle Problem; The Breeze in the Branches Problem

E35 | The T-Ball Problem; The Bus Problem

E14 | The Blockette Problem; The Tulip Problem

E13 | The Birthday Cake Problem; The Doohickey Problem

E10 | The Race Car Problem; The Big Gig Problem

E9 | The Honey Problem; The Penguin Problem

E8 | The Dinosaur Problem; The Beethoven Problem

E6 | The Messy Room Problem; The Golden Pyramid Problem

E5 | The Tree Problem; Another Tree Problem

E4 | The Circus Problem; The Buried Treasure Problem

E3 | The Three Bears Problem; The Giant Problem

E2 | The Pirate Problem; The Sleepover Problem