20/25 Grampa Dougie shares his memories with his granddaughter Alana and grandson James. (R)
14/16 The team travel around the world to see all kinds of animals and creatures. (R)
15/16 The team visit all kinds of different homes where children live from all around the world. (R)
12/25 It's Sundown Hoedown Day back in Echidna Falls and Billy is missing home.
21/25 Nina investigates why tall buildings do not fall over with the help of her sight neuron. (R)
Andy travels back in time 65 million years, to the time of Tyrannosaurus rex. (R)
13/25 Little Sandy decides she wants to fly just like Super Numtum.
22/25 Nina investigates how boats travel uphill and discovers the engineering secrets of canals. (R)
Andy travels back in time 152 million years, to the time of diplodocus. (R)
17/25 Jack finds out all about digging for stone in the family's quarry. (R)