#### Math - 2018-19

# 4.8 - Measurement

**The student will**

a) **estimate and measure** length and describe the
result in U.S. Customary and metric units;

b) **estimate and measure** weight/mass and describe
the result in U.S. Customary and metric units;

c) given the equivalent measure of one unit,** identify
**equivalent measures of length, weight/mass, and liquid volume between units
within the U.S. Customary system; and

d) **solve** practical problems that involve length,
weight/mass, and liquid volume in U.S. Customary units.

*Adopted: 2016*

### BIG IDEAS

Liquid measurements are used everyday when you are cooking.

- So that if I need to double a recipe and cook enough for everyone I will know how to do it.

### UNDERSTANDING THE STANDARD

- The
measurement of an object must include the unit of measure along with the number
of iterations.
- Length is
the distance between two points along a line.
- U.S.
Customary units for measurement of length include inches, feet, yards, and
miles. Appropriate measuring devices include rulers, yardsticks, and tape
measures.
- Metric units
for measurement of length include millimeters, centimeters, meters, and
kilometers. Appropriate measuring devices include centimeter rulers, meter
sticks, and tape measures.
- When
measuring with U.S. Customary units, students should be able to measure to the
nearest part of an inch (1/2, 1/4, 1/8 ), foot, or yard.
- Weight and
mass are different. Mass is the amount
of matter in an object. Weightis determined by the pull of gravity
on the mass of an object.
*weight*(e.g., “How much does it weigh?” versus “What is its mass?”). - Balances are
appropriate measuring devices to measure weight in U.S. Customary units
(ounces, pounds) and mass in metric units (grams, kilograms).
- Practical
experience measuring the weight/mass of familiar objects (e.g., foods, pencils,
book bags, shoes) helps to establish benchmarks and facilitates the student’s
ability to estimate weight/mass.
- Students
should measure the liquid volume of everyday objects in U.S. Customary units,
including cups, pints, quarts, gallons, and record the volume including the
appropriate unit of measure (e.g., 24 gallons).
- Students at
this level will be given the equivalent measure of one unit when asked to
determine equivalencies between units in the U.S. Customary system.
- the number of quarts in five gallons;
- the number of gallons equal to 20 quarts;
- When empty, Tim’s 10-gallon container can hold how many quarts?; or
- Maria has 20 quarts of lemonade. How many empty one-gallon containers will she be able to fill?

### ESSENTIALS

**The student will use problem solving, mathematical communication, mathematical reasoning, connections, and representations to**

- Determine an
appropriate unit of measure (inch, foot, yard, mile, millimeter, centimeter,
and meter) to use when measuring length in both U.S. Customary and metric
units. (a)
- Estimate and
measure length in U.S. Customary and metric units, measuring to the nearest
part of an inch (, , ), and to the nearest foot, yard, millimeter,
centimeter, or meter, and record the length including the unit of measure
(e.g., 24 inches). (a)
- Compare
estimates of the length with the actual measurement of the length. (a)
- Determine an
appropriate unit of measure (ounce, pound, gram, and kilogram) to use when
measuring the weight/mass of everyday objects in both U.S. Customary and metric
units. (b)
- Estimate and
measure the weight/mass of objects in both U.S. Customary and metric units
(ounce, pound, gram, or kilogram) to the nearest appropriate measure, using a
variety of measuring instruments. (b)
- Record the
weight/mass of an object with the unit of measure (e.g., 24 grams). (b)
- Given the
equivalent measure of one unit, identify equivalent measures between units
within the U.S. Customary system for:
- length (inches and feet, feet and yards, inches and yards); yards and miles;
- weight/mass (ounces and pounds); and
- liquid volume (cups, pints, quarts, and gallons). (c)
- Solve practical problems that involve length, weight/mass, and liquid volume in U.S. Customary units. (d)

### KEY VOCABULARY

*Updated: Mar 06, 2019*