Knowledge atom
Subtract accurately within 10
Finds differences with starting quantities within 10 accurately, using any mathematically valid strategy without a fluency requirement.
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
K.OA.A.2
Prerequisites
Common misconceptions
- counts the starting quantity as the first object removed and lands one off
- reverses the quantities automatically so the answer cannot be negative
Required evidence
These evidence lanes define what would count toward this atom.
EvidencePerformanceStatusNext step
Show the stepsCarry out the procedure accurately 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.