4-1 Logic Gates
4-2 Momentum 101
4-3 – Water Golf
4-4 Bridge Builder
4-5 Fling Shot
4-6 Ricochet
4-7 Water Pump
4-8 Nice Clogs
4-9 Curse of the Algae Beard
4-10 Sliders
4-11 They’ve Got Chemistry
4-12 Skeet Shooting
4-13 Sprinkler
4-14 Rhythm Nirvana
4-15 Figure Eight
4-16 Create and Destroy
4-17 The Grid
4-18 Under the Radar
4-19 Dangerous Slope
4-20 Rinse Cycle