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LEGO Education Simple Machines Set # 9689
Amazon.com: LEGO Education DUPLO Early Simple Machines Set 9656, Mechanical Fun Educational Toy and STEAM Learning for Girls and Boys Ages 5 and up (102 Pieces) : Toys & Games
LEGO Education Simple Machines Set # 9689
399Pcs/lot Parts STEAM Simple Machines Expansion Set Compatible with 9689 WEDo EV3 STEM Building Blocks Education DIY Toys Gifts| | - AliExpress
LEGO Education Simple Machines Set # 9689
LEGO MOC Marble and bars dancing - Kinetic sculpture by Mr_rigo | Rebrickable - Build with LEGO