Heres an activity where students use real dominoes to figure out which numbers are missing from two-digit addition and subtraction problems (no regrouping). Great for my kids who already understand place value and adding two digit numbers
Everyone gets a square with a quarter circle, this is the end result- could be a good ice breaker beginning of year activity. Each student decorates the square and includes their name. Nice way to decorate the bulletin boards in the beginning of the year!