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Fraction Bars are a type of mathematical manipulative, developed in the sixties by Albert B. Bennett, Jr. They provide visual illustrations of mathematical operations with fractions to gain better understanding of these operations.
Overview
Fraction Bars for halves, thirds, fourths, fifths, sixths, tenths, and twelfths form a complete deck. These bars are a part-to-whole region model for teaching the basic concepts of fractions, equality, inequality, addition, subtraction, multiplication, division, and ratios. They are plastic coated so marking bars with water-base pens can be washed off. Fraction Bars are used for teaching fractions in schools and for preparing teachers.
References
Fraction Bars Wikipedia(Text) CC BY-SA