This is a great, simple fact sheet that lays out the origins and history of CCSS. And it’s a pdf– so if you want to print it out and hand it around, you’re all set.
Bill Gates has spent an unimaginably huge amount of money supporting the Common Core both directly and indirectly. It’s hard to wrap your brain around just how much money the Gates Foundation has spent on this issue, and it has taken a lot of work by researchers like Mercedes Schneider to sort it out.
However, here’s a chart that will give you part of the picture. Created by Erin Osborne over at Honest Practicum, this gives you just the broad strokes. Be aware that even this is not all of it.