LEGO Engineering STEM Unit | Ages 5β10 Bring hands-on STEM learning into your classroom, co-op, or homeschool with this LEGO-style Engineering Unit designed for elementary students ages 5β10. Students learn how real engineers design, build, test, and improve their ideas through fun, engaging building challenges using building bricks. This unit is print-and-go, flexible for mixed ages, and perfect for STEM clubs, enrichment classes, and homeschool groups. β WHATβS INCLUDED β 8β9 weeks of e