4 • 9 Personal References for Metric Length
Common Core State Standards Detail
• SMP2
Reason abstractly and quantitatively.
• SMP3
Construct viable arguments and critique the reasoning of others.
• SMP4
Model with mathematics.
• SMP5
Use appropriate tools strategically.
• SMP6
Attend to precision.
• 4.NF.7
Understand decimal notation for fractions, and compare decimal
fractions.
Compare two decimals to hundredths by reasoning about their size.
Recognize that comparisons are valid only when the two decimals refer to
the same whole. Record the results of comparisons with the symbols >, =,
or <, and justify the conclusions, e.g., by using a visual model.
• 4.MD.1
Solve problems involving measurement and conversion of
measurements from a larger unit to a smaller unit.
Know relative sizes of measurement units within one system of units
including km, m, cm; kg, g; lb, oz.; l, ml; hr, min, sec. Within a single
system of measurement, express measurements in a larger unit in terms of
a smaller unit. Record measurement equivalents in a two-column table.
Teachers Lesson Guide
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Lesson Opener p 283
Lesson Pages 284-288
Objective
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To assist students as they establish personal references for metric units of length.
Key Concepts and Skills
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Identify personal references for metric units of length.
[Measurement and Reference Frames Goal 1]
Estimate, without tools, the length of objects or distances in centimeters,
decimeters, and meters.
[Measurement and Reference Frames Goal 1]
Measure the length of objects or distances in centimeters, decimeters, and
meters.
[Measurement and Reference Frames Goal 1]
Key Activities
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Students find personal references (parts of their bodies or other objects) to help
them estimate lengths of 1 centimeter, 10 centimeters, and 1 meter.
Key Vocabulary
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personal measurement reference
Materials
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Student Math Journal 1 pp 98-99
Student Reference Book p 130
Study Link 4-8
tape measure ♦ ruler ♦ meterstick ♦ slate
Games: Playing Number Top-It (Decimals)
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Math Masters pp 491 and 506
Student Reference Book p 256
4 each of number cards 0–9 (from the Everything Math Deck, if available)
Students practice comparing and ordering decimals.
Ongoing Assessment: Recognizing Student Achievement
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Use Math Masters, page 506.
[Number and Numeration Goal 6]
Math Boxes 4 • 9
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Student Math Journal 1 p 100
Students practice and maintain skills through Math Box problems.
Study Link 4 • 9
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Math Masters p 131
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Students practice and maintain skills through Study Link activities.
Matching Metric Units
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Math Masters p 132
Students explore relative sizes of metric units.
Designing a Measurement Scavenger Hunt
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tape measure ♦ ruler ♦ meterstick
Students make up clues for a measurement scavenger hunt.
5-Minute Math
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5-Minute Math pp 48-49
Students solve problems involving metric measurements.