Episode 1 "Gardens" 　　Episode 2 "G-Animals" 　　Episode 3 "Games" 　　Episode 4 "Geography" 　　Episode 5 "Groovy" (Christmas Special) 　　Episode 6 "Genius" 　　Episode 7 "Girls and Boys" 　　Episode 8 "Germany" 　　Episode 9 "Gallimaufrey" 　　Episode 10 "Greats" 　　Episode 11 "Gifts" 　　Episode 12 "Gravity" 　　Episode 13 "Gothic" 　　Episode 14 "Greeks" 　　Episode 15 "Green" 　　Episode 16 "Geometry" 　　Episode 17 "Compilation Part 1" 　　Episode 18 "Compilation Part 2"