Alex vs. MikeA prosthetic hand; a portable ice-resurfacer; chairs; motorised dust bunnies.
Jaden and Mackenzie vs. Andrew and Drew
E2
Jaden and Mackenzie vs. Andrew and DrewAn invention prevents planes from hitting birds; a bicycle can be ridden in the winter; towers.
Max vs. Elizabeth
E3
Max vs. ElizabethAn igloo-shaped portable shelter made of recycled materials; a gadget that helps to conserve water; water-balloon carriers; lemonade stands.
Matthew vs. Shane
E4
Matthew vs. ShaneA pet collar that monitors the animal's food and medicine intake; an automatic wiper for vehicle headlights; catapults; robots.
Mike vs. Katy
E5
Mike vs. KatyAn invention that helps hybrid cars' batteries to charge more efficiently; a shoe gadget that charges batteries; tough totes; water clocks.
Christopher vs. Katie
E6
Christopher vs. KatieControls for people who use wheelchairs; an online lip-reading dictionary; a domino dash; baby cams.
Blair vs. Alison
E7
Blair vs. AlisonMagnetized lights for school lockers; a paint additive that creates a slip-proof surface; towers; cat toys.
Logan vs. Dheevesh
E8
Logan vs. DheeveshA device for cleaning gutters; an invention that makes it possible for hydrogen fuel cells to be powered by the sun; tracks for marbles; dog-ball launchers.
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