"Eureka Math/Engage NY" VS "Eureka Math/Engage NY Foundations" course

Hi saharatsaengduangdee, so based on my understanding i think Eureka Math is the standard on-grade level course where it covers all the modules and topics exactly as designed for that grade level. Eureka Math Foundations is a companion course built for students who need to fill in prerequisite gaps before tackling the grade-level material.