Featured in Domain Arrivals · 2026-08-12
高校数学の俯瞰: A Map of High-School Mathematics
A Japanese study system that organizes high-school mathematics around the decision-making needed to choose an approach to a problem.
Why it surfacedEach topic becomes a one-page “Point,” with searchable guidance, three-level weakness marks, personal notes, fill-in-the-blank tests, and Google-synced progress. It also offers free sample PDFs of original chapter exercises, while some sections remain explicitly marked as in preparation.
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Ice Does Not Count
August 12’s newborn domains include a rule-bound archive of enormous sodas, 27 family stories cut from one afternoon, a disaster-supply map with a 24-hour freshness rule, and an ocean bell that rings only when six conditions agree.
This is one of 1,000 discoveries in the 2026-08-12 Domain Arrivals issue.