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600PCS Straws Building Toy:STEM Straws Toys in Colorful Connectors Toys.STEM activities for kids ages 5-7,This 4D building blocks can assemble various shapes such as airplanes,cruise ships deformed cars castles robots animals etct.This STEM kids building toy will be favorite Christmas gift toys for children in 2021.Great preschool toys. Fun & Educational STEM Toys:Science Toys for3 4 5 6 7 8 9 10+Years Old Boys and Girls, give them imaginative toys. And this straw building toys is Classroom STEM Toys STEM Education Toys, Indoor STEM Activity, Early Learner Tool, Preschool STEM Learning Toys, Collaboration STEM Teamwork Toys, which exercise boys and girls engineering skills, mathematics, structure, reasoning and imagination. Imaginative Christmas Gift Toy: This straw building block with storage box is most suitable for outdoor or indoor multiple people to learn and play together. educational STEM toy for kindergartens, childrens centers, and classrooms.Perfect Christmas, birthday gifts presents for preschool, pretend play and more. Share With Friends tinker toys: There are a sufficient number of 600PCS, building toys for multiple children can play indoors or outdoors in collaboration, Toys that increase the friendship and social interaction of children High Quality Toy: It has CPSIA and ASTM certificates.It is a product that has passed international safety inspection and certification.We use the latest research and development of non-toxic, safe and environmentally friendly materials that do not contain bisphenol a to make construction toys.