When you brush your teeth, how do you know that all of them are clean? And how does your smart tooth-brush know it too?
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Draw a smiley face with teeth on a piece of paper, or use Lego ® bricks to build one! Divide the mouth into 4 areas: top left & top right, bottom left & bottom right.
Code your smart robotic tooth-brush to brush each area 5 times and then notify you before moving to the next area. Once all 4 areas are clean, it stops automatically!