Let the challenges begin! Kids develop STEM skills fit for kings and queens every time they build with the Engineering & Design: Castle Set from Learning Resources. This 123-piece STEM building set's easy-to-handle pieces support multiple build-it-yourself castle designs - kids can add a bridge, stack up a tall turret, or design an open courtyard as they bring their creations to life! This building set also comes with a set of 10 double-sided activity cards filled with interactive challenges designed to boost critical thinking, problem solving, and early engineering skills.Details: Includes assorted colors123 pieces10 engineering and design challenge cardsIncludes 2 knight figuresFor ages 5 through 10