"THE" Original with games and visual models that make mental math marvelously fast and easy. Social interaction skills will also be developed. By the Mathematician professor and author Dr. Albert B. Bennett Jr.. A fun manipulative for teaching fractions. Fraction Bars(R) have long set the standard for the manipulative approach to teaching fractions. Fraction Bars are the only manipulative that can be used to compare parts and show the relationship of differences. Package of 49 durable plastic Bars. Represents halves thirds fourths fifths sixths tenths and twelfths. Can be used with up to four children. Grades 2-8.