Are there options for interactive/dynamic content?
I'm starting to switch over to sage from mathematica, and so far the biggest thing I'm missing is the ability to make interactive applets. I managed to get mplh5canvas up and running. While it's a nice start, It's far from the sort of thing I can do with mathematica.
In mathematica, one can make an interactive sin graph with something like (I forget if the dynamic tag goes with the a or the plot):
And of course it's even easier with Manipulate.
How far is Sage from this sort of functionality? I think this sort of thing is immensely helpful to students who just want to explore a function.
EDIT: Thanks a lot! Interact seems to be what I was looking for.