This download is a "workbook" that reviews numbers 11-20 in many ways on each page. It includes using ten frames, tally marks, +/- I, odd or even, number bonds, and drawing the correct number of objects for numbers 11-20.
Great to use as a review book or as individual pages for extra practice. It would make a great homework pack/page as well. Definitely will strengthen number sense by going more in depth with those tricky teen numbers!