The Classic Number & Counting Tool Made to Last. Sensational Math™ Hands-On Tally Marks™ resemble those hand-made popsicle stick tally mark manipulatives teachers have been making for years but are made of sturdy, color-coded, molded plastic. For centers, individualized instruction and small-group learning, we have created full-color activity cards for Second Grade. These activities are self-checking and aligned to standards. Set includes: (50) 2.5" x 3.5" (playing card size) full-color, 2-sided, self-checking Activity Cards.