Okay kiddo, let's imagine you want to play a new game with your friends. First, you need to figure out what kind of game you want to play. This is called "concept development." You might think about things like the rules, the objective, and who can play.
Once you have a good idea of what kind of game you want to create, you need to figure out how to make it work. This is where "experimentation" comes in. You might try playing a prototype of the game with some friends to see if it's fun and if anything needs to be changed. You might also test out different materials or ways to play the game.
Concept development and experimentation are like trying to build a puzzle. First, you need to figure out what kind of puzzle you want to build. Then, you start putting the pieces together to see if they fit and if anything needs to change. It might take a little trial and error, but that's how you create something awesome!