Modeling and simulation

Modeling and simulation is like playing with a pretend toy. First you make a model, which is like a pretend toy that is a copy of something real. Then you can use that pretend toy to simulate what it would be like for something in the real world to do something. For example, if you had a pretend spaceship model, you could use it to simulate what it would be like for a real spaceship to do something like fly to the moon.