one-zero

(it was the playing cards, 218 lbs) Imagine you are a judge for six middle school science fair projects. You must score them 0-5, 0 being worst and 5 being best, and you are required to use each score exactly once. To which of the following would you give your one zero score?

• A baking soda volcano that is producing a remarkable amount of lava, leaking all over the floor and your shoes.~
• A physics demonstration that consists of a 7th-grader throwing 45 paper airplanes at you as hard as he can.~
• A poster about different rock types, but it's clear that the kid didn't want to participate and just picked up a bunch of rocks on the playground.~
• A potato "battery" that when the kid connects it to your phone, drains your phone's battery instantly and begins glowing for the next 20 minutes.~
• A magnetism display that is far too effective and has collected, so far, three pairs of glasses, someone's gold tooth, an iPhone, seven quarters, a neighboring project's wiring, and the gym coach's whistle.~
• A set of homemade bath bombs made by a 6th grader, which are really cool, except she demands you get into the bathtub to experience them fully, and won't stop screaming until you do so.~