Lacing Buttons: 140 Pieces / JarIdeal For Sequencing And Sorting, As Well As Developing Mathematical And Motor Skills. Each Button Has A Number In Relief And Its Equivalent Braille Symbol. The Set Includes Individual Activity Worksheets And 10 3. 28 Ft. Long Laces. The Lacing Buttons, Not Only Target Mathematical And Fine Motor Skills, But Also Offer Assistance In The Core Curriculum For The Visually Impaired (Who Use Tactile Channels For Learning). Visually Impaired Students Can