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Air Tube Expansion Kit for Airflow STEM Toy - Boost Creativity, Learning & Fun! Take your child’s Air Tube adventures to exciting new heights with this Air Tube Expansion Kit! Designed for kids ages 3 and up, this kit adds extra tubes, connectors, and colorful foam balls to expand your existing Air Tube STEM toy. Let your little engineers explore airflow, physics, and design principles while having hours of hands-on, educational fun. Why Kids & Parents Love It: Airflow STEM Fun - Expand Your Builds: Experiment with airflow and watch foam balls zoom through modular tubes. This expansion kit transforms ordinary playtime into an exciting STEM adventure. Boost Creativity & Problem-Solving: With plenty of tubes and connectors, children can build unique structures, learn cause and effect, and develop spatial reasoning and engineering skills. Complete Expansion Set - More Builds, More Fun: Includes 6 straight tubes, 6 corner tubes, 12 easy-fit connectors, and 10 colorful foam balls—perfect for bigger, more complex Air Tube creations. Learning Through Play - STEM Toy for Kids 3+: Ideal for independent play, group activities, or family STEM challenges. Encourage curiosity, experimentation, and hands-on STEM learning in a fun and safe way. Accessory Only - Requires Base: This kit is an expansion set and works with the main base (sold separately) to launch balls through your tube network. Compatible with Air Tube building sets for toddlers and kids. Whether used indoors or outdoors, this Air Tube Expansion Kit keeps children active, entertained, and learning. It’s perfect for playdates, birthday gifts, or STEM-inspired activities - a must-have for any young builder or STEM enthusiast! [Airflow STEM Fun – Expand Your Builds] Transform your child’s playtime with this Air STEM expansion set! Designed for kids 3+, it includes extra tubes and balls to extend your existing Air Tube Building Toy. Experiment with airflow and watch foam balls zoom through modular tubes for hours of educational entertainment. [NOT THE FULL TOY - Accessory Only] Please note: This expansion kit is an accessory and requires the main base (sold separately) to launch balls through your tube network. Compatible with building sets for toddlers and kids. [Boost Creativity & Problem-Solving] Encourage creative thinking and hands-on STEM learning. With plenty of tubes and connectors, children can design custom structures, explore cause and effect, and enhance their engineering and spatial reasoning skills. [Learning through Play – STEM Toys for Kids 3+] Foster curiosity and experimentation while developing science, technology, engineering, and math skills. This set is ideal for independent play, group activities, or family STEM challenges, making learning hands-on and exciting. [Complete Expansion Set – More Builds, More Fun] Includes 6 clear straight tubes, 6 corner tubes, 12 easy-fit connectors, and 10 colorful foam balls. Perfect for bigger, more complex Air Tube designs, making playtime even more engaging.