These color-coded math operations task cards instantly let teachers and students know what kind of problem and whether it is static (solid line) or dynamic (double line). In Montessori we use color coding to aid the child in choosing independent work: Addition = Red Multiplication = Yellow Subtraction = Green Division = Blue These cards can be used with the Montessori Golden Beads (included in this bundle only, not with single sets) or other math manipulatives. PrerequisitesStudents should have