Patent ID: 11928321
Assignee: nan
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An apparatus for identifying equivalent fractions, comprising:
a plate defining a plane and a plurality of aligned rows, each row defined by a rectangle printed on the plate having an equal length and representing a respective fraction;
each row having a first side, a second side opposite the first side, a top side, and a bottom side opposite the top side, wherein the first sides of each row are vertically aligned and the second sides of each row are vertically aligned;
a plurality of vertical slots through the plate, each of the vertical slots being located in a position in a respective rectangle to divide a respective row into a number of equal parts, number of vertical slots in a respective row corresponding to the fraction defined by the respective row, the number of parts being equal to a value of the denominator of the fraction defined by the respective row; and
wherein vertical slots in rows corresponding to equivalent fractions are vertically aligned with one another and wide enough for a line or other indication to be drawn in the slot, on a surface, with a writing implement.