Knowledge atom
Relate the rows-and-columns structure to repeated addition
Writes a repeated-addition equation for a partitioned rectangle and connects it to array reasoning.
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.G.A.2 2.OA.C.4
Prerequisites
Common misconceptions
- adds rows and columns rather than adding equal groups
Required evidence
These evidence lanes define what would count toward this atom.
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.