Soft Foam Magnetic Rainbow Fraction® Tiles This set of 51 color-coded soft foam magnetic tiles provides a visual and tactile way to teach fractions, relationships and create bar graphs. Demonstrate wholes, halves, thirds, fourths, fifths, sixths, eighths, tenths and twelfths. Good for classroom or small group use and color-coded to correspond to the Rainbow Fraction® system. Use with any magnetic white board or Magnetic Tabletop Pocket Chart.