These Common Core Workbooks seem to be a fantastic resource for Common Core activities. They include posters of the standard, pre-made center activities to practice the standards, and worksheets for each standard. If you post a blog about them in the next few days, they're offering a free download! And as much as we teachers spend on our classrooms, resources, and supplies......free is awesome! I checked out the free sample of the book on their website and it looks great! The posters are clear and easy to read, the centers are colorful, but simple to put together and for students to play, and the worksheets look like a great way to assess whether students "get it" independently before moving on to testing. Check it out!