Distinguish area from perimeter

G3.MD.19Grade 3MeasurementSource mission: Area & Perimeter Relationships

Selects the right measure for a question and uses the correct units for each.

Progress & proof summary

LifecycleNot started

Evidence progress0 of 2 pieces collected

Current predictionNo prediction yet

Next reviewNot scheduled

Mastery projection: Not available yetWhat does this mean?

3.MD.D.8 3.MD.C.7b

swaps the two — the classic confusable pair, worth an explicit interleaved check

These evidence lanes define what would count toward this atom.

EvidencePerformanceStatusNext step

Tell it apartDistinguish the target from a near miss Not startedCollect one observation

Explain the ideaDescribe why the response works Not startedCollect one observation

No evidence recorded yet

The first response record for this atom will appear here.

Recommended next step

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

Tell it apart

Selects the right measure for a question and uses the correct units for each.

Estimated time: ~5 min