Measuring length (age 7+)

PROCEDURAL

Mathematics›Measurement|Ages 7—8|ID: mt_e4x3l2JeLI

Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, metre sticks, and measuring tapes

Mastery Evidence

Choose the most appropriate tool for measuring a given object
Align the zero mark of a ruler with the end of the object and read the measurement
Measure lengths in inches, feet, centimetres, and metres using the correct tool

Assessment Prompt

“If [child] needs to measure a piece of fabric about 80 cm long, can they pick the right tool — a short ruler or a tape measure — and use it accurately?”

Curriculum Standards1 alignment

2.MD.1Common Core State Standards for Mathematics

Measure length with appropriate tools

Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.

Measurement and Data

Prerequisites2

Measuring length (age 6+)
hardAges 6—7
Choosing measurement units
softAges 6—7

Show full prerequisite tree

Measuring length (age 6+) hard
Using standard measurement tools extends measuring with non-standard units
- Measuring length and height (age 5+) hard
  Measuring with iterated units extends Y1 beginning to measure length
  - Comparing Lengths & Heights hard
    Measuring length with units requires first being able to compare lengths directly
    - Measurable Attributes of Objects hard
      Comparing lengths/heights requires first identifying length as a measurable attribute
- Measuring length soft
  Measuring with units benefits from ability to order and compare lengths
  - Comparing Lengths & Heights hard
    Ordering 3 objects by length and indirect comparison extends direct length comparison
    - Measurable Attributes of Objects hard
      Comparing lengths/heights requires first identifying length as a measurable attribute
Choosing measurement units soft
Choosing appropriate tools builds on choosing appropriate units
- Capacity and volume hard
  Using standard units for capacity extends from beginning to measure capacity
  - Comparing Capacity hard
    Measuring capacity with units requires first being able to compare capacities
    - Measurable Attributes of Objects hard
      Comparing capacity requires understanding capacity as a measurable attribute
- Measuring length and height (age 5+) hard
  Using standard units for length extends from beginning to measure length
  - Comparing Lengths & Heights hard
    Measuring length with units requires first being able to compare lengths directly
    - Measurable Attributes of Objects hard
      Comparing lengths/heights requires first identifying length as a measurable attribute
- Measuring mass and weight hard
  Using standard units for mass extends from beginning to measure mass
  - Measuring mass and weight (age 4+) hard
    Measuring mass with units requires first being able to compare masses directly
    - Measurable Attributes of Objects hard
      Comparing mass/weight requires first identifying mass as a measurable attribute

Unlocks6

Understanding Area
softAges 8—9
Measuring with different units
hardAges 7—8
Measuring & Plotting Lengths
hardAges 7—8
Choosing the right strategy
softAges 7—8
Estimating Lengths
hardAges 7—8
Comparing lengths by measuring
hardAges 7—8