Five Twelve Thirteen

Substacknewsletter · by Five Twelve Thirteen · English

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Audience
3K subscribers
Shown publicly on Substack
Publishing
Every two weeks
5 posts indexed in the last 90 days
Last post
Oct 13, 2026
18 days ago
Likely audience
math educators
Inferred from post content

Five Twelve Thirteen is a Substack newsletter by Five Twelve Thirteen covering curriculum design, mathematics education and fraction addition. NewsletterFIT indexed 5 posts from it in the last 90 days, most recently on Oct 13, 2026. Shown publicly on Substack: 3K subscribers.

Topics

Recent posts

  • A Nice…
  • Atomising Fraction…
  • Don’t Fall…
  • Activated Long-Term…
  • We’re Teaching…

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No sponsored posts detected in the last 180 days of indexed posts.

Detected automatically from posts marked as sponsored. Detection can miss or misread placements.

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Compiled from public pages · refreshed Oct 23, 2026 · How NewsletterFIT collects and labels data