Knowledge atom
Represent a two-step problem with an equation using a letter for the unknown
Writes one or more equations using a letter to stand for the unknown quantity in a multi-step problem.
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
3.OA.D.8
Prerequisites
Common misconceptions
- uses a letter as a label for an object rather than as a stand-in for a number
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
Tell it apartDistinguish the target from a near miss Not startedCollect one observation
Recent evidence
No evidence recorded yet
The first response record for this atom will appear here.