Okay kiddo, so you know that everything in the world is made up of tiny, tiny things called atoms, right? Well, these atoms are made up of even tinier things called protons, neutrons, and electrons.
Now, some atoms have even smaller particles inside them called quarks. And some of these quarks have a property called "strangeness". It's kinda like a special power that they have that makes them different from all the other quarks.
When scientists do experiments with particle accelerators (machines that make particles go really fast), they can make these strange quarks collide with each other and other particles.
When these collisions happen, they create new particles that also have strangeness. And these particles can tell us a lot about how the universe works!
So, strangeness production is just a fancy way of saying that scientists are making new particles with strange quarks by smashing particles together really fast. It's like playing with a toy ball and seeing what happens when you bounce it off other toys.
It may seem like a complicated topic, but scientists study it to learn more about how the universe was formed and how matter works on a very small scale.