In this pack, students will be working with numbers 1-20. There are 20 hearts with numbers on each. Students can stack unifix cubes on each heart to show their understanding of counting and recognition. Tip: for Valentines you could use candy hearts instead of unifix cubes. Then, also attached are worksheets for students with numbers 1-20. Each worksheet has tracing, drawing, tallying, coloring base ten blocks, and using ten frames on each page. This would be great for math centers. Students can complete numbers one through twenty.