Caught my eye! I wish the packet she sells just had pages like this one for numbers zero to thirty. I'd buy it in a heartbeat. Wasn't too interested in the other stuff the thumbnails showed. Maybe I can make something like later on if I have time.
1 more, 1 less and 10 more, 10 less centers for each month of the school year! That's 16 center activities!! The centers begin with smaller numbers (1-30) and progress in difficulty to incorporate numbers up to 120. $