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The scientific exploration of the physical experiment instrument for the recoil propeller of the trolley and the reaction force

$4,361.00
‘ Model Number: physical equipment Brand Name: HOGNSIGN Origin: Mainland China Subject: PHYSICS Power source: AAA battery (not included) One order for one set
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TONLISH Scientific Calculator with Writing Tablet 240 Function Engineering Financial for School Students Office

$5,748.00
‘ Power Source: Battery Material: Plastic Applicable Battery Type: Coin Batteries Model Number: s9 Max. Digits: 10 Style: Scientific Brand Name: TONLISH Origin: Mainland China button battery quantity: 2pcs
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Wooden Hydraulic Excavator Model Children's Educational Toys Wooden Handmade DIY Scientific Experiment Parent-child Interaction 1
Wooden Hydraulic Excavator Model Children's Educational Toys Wooden Handmade DIY Scientific Experiment Parent-child Interaction 2
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Wooden Hydraulic Excavator Model Children’s Educational Toys Wooden Handmade DIY Scientific Experiment Parent-child Interaction

$7.12 – $13.58
Wooden Hydraulic Excavator Model Children’s Educational Toys Wooden Handmade DIY Scientific Experiment Parent-child InteractionFeatures: 1. This excavator uses a syringe
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