The first is called a Rekenrek. Check this out. Thanks to Heather Webb for the insight into this one.
I found these sites to get you started, but there are a lot more.
What is a rekenrek? How to make a rekenrek
Then I started matching ideas for activities, trying to really understand the standards. Again thank you Heather!
Unpacking the Standards and Common Core Tasks (I like this one because it gives you ideas for what strategies to watch for.
Last, but not least, is an invaluable guide for teaching the standards by Ky Davis. She has taken the standards and made natural progressions with them. Ky's Book
