These extra large and thick write and wipe flash cards allow children to count abstract objects (dots) and identify them with a numeral. Using a dry-erase marker and following the strokes in order as they are outlined on the card, children will learn not only how to count, but also how to write the numbers 1-30. "There are very few, if any, dry-erase flash cards on the market. The thick cardboard and their re-usability makes them a very solid investment for parents, as a single set can be used for multiple children," Adam Hennessy, in marketing and account management for Kumon Publishing, told TDmonthly. Launch date: July 14, 2006.