Step function

A step function is like a staircase, where there are different levels and you can only go up to the next level. Each level is called a "step".

Imagine you are trying to count your toys in your toy box. You take out one toy, count it, and then put it back in the box. Then you take out another toy, count it, and put it back in the box. You keep doing this until you have counted all your toys.

Each time you pick up a toy and count it, you are taking a step up on the staircase. The staircase represents how many toys you have counted so far.

The step function is a mathematical function that works in a similar way. It takes a value as input, and depending on what that value is, it "steps up" to the next level.

For example, let's say we have a step function that counts how many apples you have. If you have 0 apples, the function is on the first step. If you have 1 apple, the function "steps up" to the second step. If you have 2 apples, it "steps up" to the third step, and so on.

In simple terms, a step function is a way to count things and keep track of how many you have counted so far, just like the steps on a staircase.