<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">

  <!-- ===== Core pages ===== -->
  <url>
    <loc>https://numberbender.com/</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>weekly</changefreq>
    <priority>1.0</priority>
  </url>
  <url>
    <loc>https://numberbender.com/about</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/contact</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://numberbender.com/privacy</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.3</priority>
  </url>

  <!-- ===== Student pages ===== -->
  <url>
    <loc>https://numberbender.com/courses</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://numberbender.com/find-your-course</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>
  <url>
    <loc>https://numberbender.com/start-here</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>

  <!-- ===== Worksheet hub pages — Calculus (populated) ===== -->
  <url>
    <loc>https://numberbender.com/courses/calculus/calculus-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/calculus/limits-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/calculus/derivatives-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/calculus/integrals-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/calculus/calculus-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/calculus/limits-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/calculus/derivatives-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/calculus/integrals-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>

  <!-- ===== Worksheet pages — Algebra (populated) ===== -->
  <url>
    <loc>https://numberbender.com/courses/algebra/algebra-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/algebra/algebra-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>

  <!-- ===== Worksheet pages — Statistics (populated) ===== -->
  <url>
    <loc>https://numberbender.com/courses/statistics/statistics-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/statistics/statistics-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>

  <!-- ===== Worksheet pages — coming soon (placeholder, indexed for demand signal) ===== -->
  <url>
    <loc>https://numberbender.com/courses/trigonometry/trigonometry-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/trigonometry/trigonometry-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/precalculus/precalculus-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/precalculus/precalculus-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/statistics/inferential-statistics-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/statistics/inferential-statistics-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/geometry/geometry-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/geometry/geometry-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/discrete-math/discrete-math-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/discrete-math/discrete-math-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/linear-algebra/linear-algebra-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/linear-algebra/linear-algebra-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/analytic-geometry/analytic-geometry-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/analytic-geometry/analytic-geometry-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/logarithms/logarithms-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/logarithms/logarithms-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/math-in-a-minute/math-in-a-minute-english/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/courses/math-in-a-minute/math-in-a-minute-filipino/worksheets/</loc>
    <lastmod>2026-05-11</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
  </url>

  <!-- ===== Flipped Classroom hub + spoke pages (highest SEO value) ===== -->
  <url>
    <loc>https://numberbender.com/flipped-classroom-math</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
  </url>
  <url>
    <loc>https://numberbender.com/flipped-classroom-research</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://numberbender.com/flipped-classroom-videos</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://numberbender.com/flipped-classroom-books</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/flipped-classroom-distance-learning</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/flipped-classroom-higher-ed</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/flipped-classroom-mistakes</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/flipped-classroom-quickstart</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>

  <!-- ===== Flipped Classroom: AP Statistics (SEO spoke) ===== -->
  <url>
    <loc>https://numberbender.com/flipped-classroom-ap-statistics</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>

  <!-- ===== AP Calculus FRQ Reviewer (Phase 3.5) ===== -->
  <url>
    <loc>https://numberbender.com/ap-calculus-frq-books</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>

  <!-- ===== Educator pages ===== -->
  <url>
    <loc>https://numberbender.com/teacher-resources</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/teach-it-like-you-stream-it</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>

  <!-- ===== Speaking pages ===== -->
  <url>
    <loc>https://numberbender.com/speaking</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>
  <url>
    <loc>https://numberbender.com/speaking-archive</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://numberbender.com/speaking-2025-06-otc</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/speaking-2025-07-luisiana</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/speaking-2025-08-seameo-indonesia</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/speaking-2026-03-site-philadelphia</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>
  <url>
    <loc>https://numberbender.com/speaking-2026-04-actla-51</loc>
    <lastmod>2026-05-07</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.5</priority>
  </url>

  <!-- ===== Blog (monthly publishing cadence) ===== -->
  <url>
    <loc>https://numberbender.com/blog</loc>
    <lastmod>2026-05-05</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://numberbender.com/blog-flipped-first-class</loc>
    <lastmod>2026-02-02</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/blog-five-minute-rule</loc>
    <lastmod>2026-03-12</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/blog-become-edutuber</loc>
    <lastmod>2026-04-10</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://numberbender.com/blog-flipped-mistakes</loc>
    <lastmod>2026-05-05</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.8</priority>
  </url>

</urlset>
