Observed arrival · 2026-09-20
徽州八角亭：数学藏在一座亭子里
A Chinese ninth-grade project site uses a real octagonal pavilion in Shexian to teach geometry, silver ratios, modeling, and design.
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- For
- Ninth-grade students and interdisciplinary teachers
- Worth noticing
- The project connects five measured pavilion features to a 2.414 silver-number ratio.
Field notes
The course separates the silver ratio from the silver number and asks students to label which quantity each design uses. Its geometry sequence includes square corner-cutting, similar inner and outer column rings, and measurements taken from both plans and photographs. The model-building activity exposes a scale parameter, an inner-to-outer similarity ratio, and a column-height ratio, while the design activity keeps exported SVG or PNG work on the local browser.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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