First of all, have you checked out Charity Preston's latest resource? AWESOME!! She has put together a site for reading and for math that lists tons of free and paid products specific to each Common Core standard K-12!
Here is another fantastic resource for Common Core. Read Tennessee breaks down each K-3 standard (reading and math) and offers multiple ideas for lessons, assessments, etc. This is one you need to bookmark for sure!
I also came across this Kindergarten Common Core Workbook.
It has over 600 pages of worksheets, activities, and posters for both ELA and Math for Kindergarten Common Core. How wonderful to have resources for each skill all bound together in one workbook! I'm thinking this workbook will really come in handy for assessment purposes. You can download a 34 page free preview of the workbook here.
What resources have you come across? Leave a comment below to share!