This product is for teaching basic addition of numbers up to 10. It uses the patented Adaptaboard grid system on a new tough printed Mathsphun board. The grid provides the columns and rows into which the children place or take out and replace the numbers in the correct positions. The signs +, -, /, x and = are also provided. This set comes with 213 pieces and 4 pages of class activities, all contained within a plastic tray.