iPad multitasking question

Hello all,

I purchased an iPad for my autistic brother to use special ed apps and watch movies. I'm an Android guy but Apple definitely has this market locked down and I recognize that. Anyway, as I was setting it up I tried out the multi tasking... and I noticed something weird. Is the multi tasking UI on the 9,7 inch screen just a small row of icons? Why doesn't it use thumbnails of the app like in OSX or Windows Phone or Android? Is there an option to enable this? Is this in iOS 6?

Thanks!