3.MDR.5.4
Use rulers to measure lengths in halves and fourths (quarters) of an inch and a whole inch.
Khan Academy Resources
1-on-1 AI tutoring aligned to 3.MDR.5.4. Instant help for students, real-time insights for teachers.
Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.
Free for teachers, forever →