Designed by mathematician, professor and author Dr. Albert B. Bennett, Jr. The original, creative and 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. Information on how to place your order by fax or by telephone. Product Number: SR0812