Help kids learn basic math skills with the Learning Resources Ten Row Counting Abacus. This teaching tool is and updated version of an ancient device that has taught people about numbers for generations. It is made with plastic beads on a metal rod so they slide easily back and forth and it comes mounted on a sturdy plastic base to help keep it in place while you use it. The Learning Resources abacus can be used to teach counting addition and patterns to kids of all ages.