Knowledge atom
Select an efficient strategy for a given fact
Given an addition or subtraction fact within 20, names and applies a sensible strategy rather than defaulting to counting.
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
1.OA.C.6 1.OA.IA.C.2
Prerequisites
Common misconceptions
- has strategies available but defaults to counting on every problem under time pressure
Required evidence
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
Recent evidence
No evidence recorded yet
The first response record for this atom will appear here.