Foam manipulatives provide a way for children to learn concepts through developmentally appropriate hands-on experience. Great for basic money counting, grouping, sorting, adding and subtracting. Write-on/Wipe-off with dry erase or damp wipe markers. Pieces easily punch out from an 8.5" x 11" standard size heavy duty die-cut thick foam sheet. Each set includes 12 pieces, $1, $5, $10, $20, $50 and $100.