Country crows atop pumpkins teach number sequence from 1-20. Task cards have a series of 2 numbers with the 3rd one missing. Students must choose the correct card to fill in the missing number. Includes 18 task cards and number cards 1-20. Use as a learning center or teaching manipulative. Large enough for small groups and bulletin board or pocket chart display. The cards can also be used for number assessments. All cards are ready to print on cardstock, laminate and cut.