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This foldable is a unique graphic organizer that expands on the venn diagram typically used for defining the sets to which a number belongs. As the teacher defines the number sets, the students build the foldable by taping tabs over the included numbers. Once complete, the tabs overlap multiple boxes, such that as a student lifts the tabs to find the most basic set to which the number belongs, they will identify all sets to which the number belongs by listing the tabs they had to lift. This foldable is a great visual for a student to identify that if a number is an Integer, it is also a Rational Number because to find -3 a student lifts 2 tabs. While, if a number is a Rational Number, it may not be an integer, since a student would find a fraction listed as Rational, without lifting any additional tabs.