15 Di 7~23 Di Rods Standard Abacus Soroban Chinese Japanese Calculator Counting Tool Mathematics Beginners Caculating Toys

Material: PlasticPack: 1pcSize:26.5 * 6 * 1.5CM7th gear: 12cm * 6cm * 1.5cm9th gear: 14.5cm * 6cm * 1.5cm11th gear: 18cm * 6cm * 1.5cm13th gear: 20.5cm * 6cm * 1.5cm15th gear: 23.5cm * 6cm * 1.5cm17th gear: 26.5cm * 6cm * 1.5cmGood quality, exquisite workmansh, elegant appearance, and unique personality.Small and cute, easy to carry, with wide applicability.It is a ditional computing tool that can exercise children's thinking, logical thinking, spatial imagination, and other abilities through the operation and movement of beads.Not only can it be d for basic calculations, but it can also improve children's understanding and operation of numbers through some gamified methods. For example, stimulating children's interest and partication through fun games such as gueing numbers and racing calculations.Note:Due to manual measurement, please allow an error of 1-3mm. Please ensure that you do not mind before bidding.Due to the differences between different s, the images may not reflect the actual color of the item. Please refer to the actual image received. Thank you very much.