Bouncy 3D platform

Hello there,
I’m working on a personal project (I am a newbie at scripting), and I’d like to add some bouncy platforms, which bounce the player up as he lands on it. I don’t really know how to start, I can’t find any helpful (for my level) advice in my researches. I tried to use the physic material from Unity, but I can’t manage to make it work…
Any help would be much appreciated !

Physics materials is the way. The documentation is quite clear and simple.

There’s no physics in that. Just code a method for the jump and activate it on platform collision from above.