ALEXANDRIA, Va., June 9 -- United States Patent no. 12,288,474, issued on April 29.
"System and method for teaching arithmetic" was invented by David Drymiller (Bartlett, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for teaching arithmetic has a plurality of training aides or manipulatives wherein a child/student learns arithmetic facts by executing the method using the system. The physical training aids may include a die (10,12), a factor card (14) and a factor finder member (16). The physical training aids are used with the child where the child creates a multiplication product by rolls of the die (10,12) wherein the child uses the factor card (14) and the factor finder member (1...