Knowledge atom
Solve put-together and take-apart problems with an unknown addend within 100
Finds a missing part when the whole and one part are known.
Start practiceProgress & 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
2.OA.A.1
Prerequisites
Common misconceptions
No common misconceptions have been recorded yet.
Required evidence
These evidence lanes define what would count toward this atom.
EvidencePerformanceStatusNext step
Apply the ideaUse the idea in a new situation Not startedCollect one observation
Represent itShow the idea with a model or notation Not startedCollect one observation
Recent evidence
No evidence recorded yet
The first response record for this atom will appear here.