Thread the head and the stringThread the head and the string Make shapes with string and train your brain and hands! This is an educational book that develops dexterity, spatial awareness, and color sense while playing with string. It comes with a problem set of 30 questions. It also comes with a textbook for instructors that contains answers and teaching points. 26018025mm 1 x stringing board, 4 x strings (4 colors: red, blue, yellow, green), 1 x problem book, 1 x instruction