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MathGrade 3Fractions

Knowledge atom

Justify a fraction comparison with a model or number line

G3.FRA.17Grade 3FractionsSource mission: Compare Like-Structured Fractions

Backs a comparison with a drawing, fraction strip, or number line rather than a rule alone.

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Progress & proof summary

LifecycleNot started
Evidence progress0 of 2 pieces collected
0%
Current predictionNo prediction yet
Why?
Next reviewNot scheduled
Mastery projection: Not available yetWhat does this mean?

Standards alignment

3.NF.A.3d

Prerequisites

Common misconceptions

  • draws two wholes of different sizes, invalidating the comparison

Required evidence

These evidence lanes define what would count toward this atom.

i
EvidencePerformanceStatusNext step
Represent itShow the idea with a model or notation Not startedCollect one observation
Explain the ideaDescribe why the response works Not startedCollect one observation

Recent evidence

No evidence recorded yet

The first response record for this atom will appear here.

Recommended next step

Start a short practice

Use one focused task to begin collecting evidence for this atom.

Represent it

Backs a comparison with a drawing, fraction strip, or number line rather than a rule alone.

Estimated time: ~5 min

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