This set of subitizing flashcards and game cards make use of a Rekenrek and ten frames to help students subitize numbers 1 - 20, recognize 6 - 10 as "5 plus something," 11 - 20 as "10 plus something," and learn combinations of 10.

The flashcards each have 2 questions to answer based on the image. The playing cards at the end can be used for matching or memory games to compare 1 - 10 and 11 - 20 with their words, numerals, ten frames, and Rekenrek images.

This is a digital copy of the flashcards and playing cards that are included in Framework Math Volume 1: Laying the Foundation, the first book in the workbook series entitled Developing Number Sense Using Ten Frames and a Rekenrek.

While these pages are included in the first volume, this file gives you the ability to print these flashcards on colored paper or cardstock and laminate them or use them however you wish, whether or not you are using the workbook.