K Nex 15210 Beginner 40 Model Building Set Building with K NEX is easier than ever, with the Beginner 40 Model Building Set featuring all-new easy-build parts that allow children ages 5 and up to have frustration-free building experience. This set contains 141 parts and easy-to-follow, step-by-step building instructions and ideas for 40 different models. Your little builder can also use the parts to design and create from their own imagination! The new parts a barbell shaped rod that easily sandwiched between 2 connectors, and a flat panel piece that provides structural support were specifically designed to address the needs of younger builders, who can easily build 2 flat shapes and then connect them together into a 3-D creation! Plus, newly designed wheels pop right on they ll be on the go in no time! Building with K NEX supports a child s developmental growth and puts them on a path towards a better understanding of STEM subjects. As they fit the pieces together, they re developing spatial awareness and honing they are fine motor and dexterity skills. Give your child the gift of creativity with K NEX and think outside the blocks! Features: This innovative STEM toy allows children to explore science, technology, engineering and maths, while having fun and developing their creativity and imagination This beginner building set includes 141 parts, including K NEX rods and connectors Build re-Build Instructions and ideas for 40 different models are included, like a car, a skyscraper, an airplane, a rowboat, and so much more! Set comes with an easy-to-follow instruction manual. Suitable for ages 5+ Instructions and ideas for 40 different models are included, like a car, a skyscraper, an airplane, a rowboat, and so much more!