Happy Numbers is a Common Core and State Standards-aligned program. You can see the alignment maps below: Alabama Course of StudyCommon Core StandardsConnecticut Core StandardsFlorida StandardsFlorida B.E.S.T StandardsGeorgia Standards of ExcellenceIllinois Learning StandardsMassachusetts Curriculum Framework for MathematicsMichigan Mathematics StandardsMissouri StandardsNebraska Mathematics StandardsNorth Carolina StandardsNYS StandardsOhio Mathematics StandardsOklahoma StandardsPennsylvania Core Standards for MathematicsSouth Carolina Standards for MathematicsTennessee Math StandardsTexas StandardsVirginia Standards