Beaded number rods for subtraction! Great visual for students with special needs. Adding concrete materials when performing simple operations, helps build number sense to ensure students are relating quantities to symbols (numbers). For this and more great ways to use beads and pipe cleaners in your math lesson, go to: http://commoncoreconnectionusa.blogspot.com/2014/12/beaded-number-rods.html
This helps children so they can move the fingers instead of trying to use their fingers. Represent addition and subtraction with objects, fingers, mental images, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.