Lakeshore subtraction machine learning toy

Guc pfsf a little wear but fully functional great for practicing subtraction skills Recommended Age 5 yrs. - 7 yrs. / Kindergarten - 2nd gr. Description Our self-checking Subtraction Machine makes math so simple, kids can teach themselves! Children just press the equation buttons…and the answers pop up for immediate reinforcement! You get 81 equation buttons locked securely into the 8 1/2" x 9 1/2" plastic frame.