Engineering Super Structures Educational Building Set Toy Game Book Learning Aid

Large set! Has been opened and some pieces punched out from perforated outlines, very gently used. Build the world’s most amazing super structures and discover the science of engineering. 10 mega models to construct. Includes 48-page book, 173 model pieces (sturdy cardboard, 12 nuts and bolts and string. From Costco. ISBN 968-1-68297-246-5. Retail price $24.99. Building sets for boys or girls! STEM homeschool home school schooling homeschooling