Set Theory By Venn Diagram

It is used for understanding the concept of subset of a set, disjoint set, union, intersection, complements, power set & set difference by Venn Diagram. Set contains 8 pcs. of set activity models in plastic in 4 colors, 3 sorting rings with 10 numbers from 0 to 9. Eight student activity card in eight colors with good quality paper. How to use Manuals.