There are 52 black/white Common Core 4th Grade MATH Anchor Reference Charts in a PDF AND 52 black/white GOOGLE Anchor Reference Chart slides included with this product. The anchor charts cover the ENTIRE YEAR of standards!If you have previously purchased the anchor charts, please download the product again to receive the new updates!TWO WAYs TO USE THE ANCHOR CHARTS:1. The PDF makes copying the anchor charts easy and it means having a hard copy to distribute to students or place on a bull