Math  201819
2.8  Estimate and Measure
The student will
a) estimate and measure length to the nearest inchb) estimate and measure weight to the nearest pound.
Adopted: 2016
BIG IDEAS
 So that I can focus on developing the skills and tools needed to measure length, weight/mass, and capacity is the foundation for quantifying the world around us and its usefulness in many aspects of daily life
 So that I can recognize examples include measuring one’s weight and height, cooking, consumer skills, etc
UNDERSTANDING THE STANDARD
 The process of measurement involves selecting a unit of measure, comparing the unit to the object to be measured, counting the number of times the unit is used to measure the object, and arriving at an approximate total number of units.
 Measurement involves comparing an attribute of an object to the same attribute of the unit of measurement (e.g., the length of a cube measures the length of a book; the weight of the cube measures the weight of the book).
 A clear concept of the size of one unit is necessary before one can measure to the nearest unit.
 The experience of making a ruler out of individual units of length can lead to greater understanding of using one. A ruler takes those units of length and numbers them. Measurement of length is counting the number of units.A “broken ruler” is a useful tool for students to use in order to develop an understanding of counting the number of units.
 Students benefit from experiences that allow them to explore the relationship between the size of the unit of measurement and the number of units needed to measure the length of an object.
 Benchmarks of common objects need to be established for one pound. Practical experience measuring the weight of familiar objects helps to establish benchmarks.
ESSENTIALS
The student will use problem solving, mathematical communication, mathematical reasoning, connections, and representations to

KEY VOCABULARY
Updated: Aug 22, 2018