Okay kiddo, bisection is a way of finding something really specific in a big group of things. Let's say you have a bag with a lot of different colored marbles inside it and you want to find a red one. Bisection would mean dividing the bag in half and seeing which half has the red marble. So you pick one half and see if it has a red marble. If it does, then you keep that half and divide it in half again, and keep doing that until you find the red marble. If that half doesn't have a red marble, you take the other half and do the same thing. You keep dividing the group in half until you find what you're looking for. This is a really simple example, but bisection can be used for lots of different things too, like finding the right number on a scale or searching through a large data set. It's a way of narrowing things down and finding exactly what you need.