Blank 20-Bead Rekenrek
A 20-bead arithmetic rack at the starting position, with all beads slid to the right, ready for students to slide over and model a number.
Create a blank 20-bead rekenrek: a clean rectangular frame with two parallel horizontal rods, ten round beads on each rod (five red then five white), all beads pushed to the right at the starting position so the rows are empty on the left. White background.