This demonstration Rekenrek is useful for demonstrating addition and subtraction in the classroom.
Features 100 beads in red and white. The upper five bars have five red beads on the left and five white beads on the right. The lower five bars have five white beads on the left and five red beads on the right. Color change is to visually indicate 100 consists of two times 50.
16" x 20".
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