Knowledge atom
Write the related addition and subtraction facts for a part-part-whole triple
Given three related numbers, writes all four equations in the fact family.
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.B.4 1.OA.D.8
Prerequisites
Common misconceptions
- writes 6 − 14 = 8 — does not recognize the whole must be first in a subtraction
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
Tell it apartDistinguish the target from a near miss Not startedCollect one observation
Recent evidence
No evidence recorded yet
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