Lego Education 9689 Plus Teacher's Guide Activity Pack For Simple Machines | #1843795304
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 9689 Machines - KinderSpell ®
LEGO Education Simple Machines Set #9689 with Teacher's Guide & CD-ROM | #1832127671