15 in 1 STEM Wooden Building Blocks -15+ Various Shapes, 3D Puzzle, Brain Games, Educational Toys Gift for Kids and classroom, Montessori STEM Toys for Ages 5+ to Adults (15 in 1)

15+ Building Ideas from Mortise and Tenon : 42 wooden blocks can be combined into 15+ different forms according to the instructions, STEM Brain teaser puzzles toy for kids Natural Wood without Paint and Rough Edges ： The toy building sets are safety and healthy,smooth-sanded 16 times,and the surface is high quality.It's carefully designed STEM Toys for 5 Year Old + : Brain games develop children's hands-on skills, thinking abilities, problem-solving skills,and concentration.Learning Educational Toys for Kids ages 5+.Especially suitable 3D Puzzles building blocks for classroom aged 6-16 Parent-child Interaction : Spend a happy time with your children through building activities. Interlocking building blocks for adults and kids and teens Perfect Gifts : A special birthday or Christmas gift for kids, boys and girls are sure to receive a huge surprise Convenient Storage : Comes with a storage bag for quick organization or easy portability when going out Craftsmanship of Chinese architecture : The mortise and tenon joint structure, known as SUNMAO, derived from the wisdom of traditional Chinese architecture, ensures excellent stability of the toy after interlocking the wooden blocks, making it less prone to falling apart More Gameplay to Explore : Beyond the 15 play methods listed in the manual, even more fun forms are waiting for your child to discover, Manufacturer: Qiaolin Xinluban (Shandong) Toy Processing Co., Ltd.