Montessori Fraction Charts, includes Equivalencies, Addition, Subtraction, Multiplication, and Division. Total of 22 charts and 1 table of contents, including one that was not listed in my album. The charts are used along in the Montessori math materials to learn fraction operation rules. For more info, see: https://www.guavarama.com/2015/03/31/montessori-fraction-charts/Suitable for ages 6-12 or 1st through 6th grade.