This is a PowerPoint I created to get students familiar with different groupings of numbers. I show my students a slide on the SmartBoard for a few seconds, then hit the blank button so that the screen goes black. Students then get to tell me how many dots or squares they saw! It's amazing to hear all of the different ways that students view the patterns. Even helps with some basic addition! You could also print out the slides and use them like flash cards. There are 40 slides in the PowerPoint. Enjoy!