CKMath Unit 6: Length Measurements Within 120 Units
Focus:
In this unit, students extend their knowledge of linear measurement while continuing to develop their understanding of operations, algebraic thinking, and place value. Students compare the length of objects by lining them up at their endpoints, and explore ways to compare lengths of two objects that cannot be lined up. From there, they transition to the idea of iterating length units, or using the same length unit allows us to measure the lengths of objects and to communicate measurements clearly.
Some objects that students measure by iterating small units yield measurements of over 100 length units. Students consider how to count and represent these larger groups of objects—up to 120—with a written number. They use familiar representations (connecting cubes and base-ten drawings) to recognize 100 as 10 tens, but do not consider the unit of a hundred until grade 2. Later in the unit, students solve problems in various contexts, including measurement. They practice solving all story problems types with unknowns in all positions.
Number of Lessons: 16 and 1 optional
Instruction Time:
Approximately 60 minutes
(Please note that each lesson is designed for one instructional block, and may be divided into shorter or longer segments based on teacher pacing and student needs.)
Additional Search Terms:
indirect comparison • length • iterate • attribute
