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These magical calculation rings are magnetic, it can be detached and turned to a desired selection.
It is perfect when used with a Timer, for adults’ indoor games and for children to help develop their mathematical skills.
It covers Addition, Subtraction, Multiplication, Greater Than and Less Than.
Material: Plastic
Size: 6.2*3CM
Quantity: 1 set include 6pcs Magnetic Rings
Feature: Calculation Game, Magnetic Rings, Brain Teaser.
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