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.
I would love to demonstrate this idea in my classroom and make my students do it for homework . Using a cereal box to practice math facts make it much more fun for the students and the teachers. The only problem is the teacher may have to collect all the cereal boxes for the kids to take home and make his/her own direction to go along with it . ( It also depend on the students age range.)