Generic Toy Building Blocks - Children's Racing Track: 101 Pieces of Various Track Models, Suitable for Boys and Girls Over 3 Years Old

This DIY STEM toy building blocks color and shape recognition, hand-eye coordination, creativity and imagination, motor skills, logical thinking and problem-solving skills, architecture and design skills develop while playing.【Interactivity and extensibility】 This is an excellent DIY toy, suitable for adults and children to participate together and enjoy hours of fun with their parents! This classic large-scale construction set is sturdy and durable, with 2-in-1, 3-in-1 and 4-in-1 instructions added to the package, adding more challenges to more units.【Best STEM Gift】 The ideal marble running gift for boys and girls over 3 years old.