JAXILLMIND FAMILY · JAXON · GRADE 4 · 4.MD.A.3
AREA AND PERIMETER — IS IT REASONABLE?
L5 · Evaluate
Which answer can be right?
Level 1
Right 0
❤️❤️❤️
Learn this first
Area covers, perimeter surrounds.
Area is rows of squares, so you multiply. Perimeter is a walk around the edge, so you add. They answer different questions.
Example: 5 by 10: area = 50 squares; perimeter = 5+10+5+10 = 30.
Tap Start to play — spot the answer!
Keep going — this game grows with you
- L1 RememberRecall the fact.
- L2 UnderstandExplain what the number means.
- L3 ApplyUse it to solve a problem.
- L4 AnalyzeBreak the problem into parts.
- L5 EvaluateJudge whether an answer is sound.
- L6 CreateBuild a problem of your own.
Starts at L1 · climbs to L6 — analyze, evaluate and create, not just remember.
TTCF — capability · time bar · failure mode · detection
| Capability | TTC | Failure mode | Detection |
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Source: products/xml/games/family/jaxon-math-g4-L5.xml v0.1 · engine "choice" · compiled by gen-brain-game.mjs · gated by check-brain-game.mjs