Mathematics Education Set theory lesson 2 – subset, empty set, finite/infinite set, equal/equivalent set, cardinality. By Magic Monk on Wednesday, April 17, 2019 Today I explain the concepts of subset, empty set, finite set, infinite set, equal set, equivalent set, and cardinality. programming steemiteducation steemstem technology Previous Post Next Post Related Posts Mathematics Education Vector applications question – Elastic collision, momentum, and kinetic energy Mathematics Education Vectors lesson 21 – Basic vector operations in Geogebra Mathematics Education Vectors lesson 20 – drawing vectors in Geogebra