This is a PowerPoint that I used recently to revise the Past Simple with an Entry 2 ESOL group.
Each branch has a worksheet to consolidate the learning.
I found that students really responded well to this way of mapping out the grammar point.
Each student was given an A3 copy to put on the ceiling above their bed so that when they can't sleep... :)
I hope you find it useful.
Mind Map for the Past Simple
The PowerPoint, which you can download, is animated to introduce each part of the mind-map. Please watch the animation through before you use it.