Rekenrek Math Tool
thingiverse
What is a rekenrek, you ask? It's essentially a simplified abacus designed specifically for arithmetic and number sense in primary grades! Print some out and make them accessible to elementary math students in your life, and watch their addition, subtraction, and number composition skills skyrocket! Or just sit back and listen as they expertly slide the counting rings back and forth until it becomes almost mesmerizing. Printer Settings Printer Brand: MakerBot Printer Model: MakerBot Replicator 2 Notes: Note: I intentionally designed thin supports for the axle that easily break away when the counting rings are moved.
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