I want my Sphere to change materials

I’ve been messing around with Unity and I would like to know how to get my Sphere object to change materials every frame (I’m assuming this means that I need to put something in the Update function, but I don’t know what).

Assuming you know some basic programming, I would create an array for the different meshes then scroll through it at a predetermined pace.

I won’t give you the code because I think it’s best to learn by figuring things out on your own.