Count and subitize by playing a game.
This activity is available for your phone in the Android Market or Apple App Store.
Thank you for your interest in NCTM’s Illuminations. Beginning in mid-April, all Illuminations content will be moving here on nctm.org. Interactives will remain openly available, and NCTM members will have access to all Illuminations lessons, which will contain new filtering and search options. We hope you
will continue to use and enjoy these resources on nctm.org.