This is a 5 - 10 minute practice of mental math skills. When this practice is implemented regularly, students are able to manipulate number and make computations more fluidly. The result of this practice is far reaching! Sharing mental math strategies makes math more exciting!
Sherry Parish provides a wonderful introduction with videos to support implementation. This book should be at your campuses, but I have a copy available for check-out if you are interested!
Cathy Humphreys and Ruth Parker also have an amazing book to support teachers with this practice. This book also includes videos and many other pertinent resources.
These are a couple of great websites to utilize: