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    <loc>https://www.distancecalculus.com/introvideos/watch/conic-parabola/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/precalculus/conic-section-parabola.gif</video:thumbnail_loc>
      <video:title>Conic Section: Parabola from Cone Slice</video:title>
      <video:description>Precalculus: Animation of a cone being sliced by a plane to produce a parabolic conic section.</video:description>
      <video:player_loc>https://www.distancecalculus.com/assets/animations/conic-section-parabola.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/assets/animations/conic-section-parabola.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/3d-surface/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/multivariable/3dspin.gif</video:thumbnail_loc>
      <video:title>3D Surface Rotation</video:title>
      <video:description>Multivariable Calculus: Rotating 3D surface visualization from Multivariable Calculus.</video:description>
      <video:player_loc>https://www.distancecalculus.com/assets/animations/3d-surface-spin.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/assets/animations/3d-surface-spin.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/mathematica-copypaste/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/linearalgebra/LA-Mma-CopyPaste2.gif</video:thumbnail_loc>
      <video:title>Copy/Paste Workflow in Mathematica</video:title>
      <video:description>Linear Algebra: Demonstration of the copy/paste workflow from explanation notebooks to homework notebooks in Mathematica.</video:description>
      <video:player_loc>https://www.distancecalculus.com/assets/animations/mathematica-copypaste.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/assets/animations/mathematica-copypaste.mp4</video:content_loc>
      <video:duration>15</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/livemath-spinning/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/images/LM4spinninglarge2.gif</video:thumbnail_loc>
      <video:title>LiveMath Software Animation</video:title>
      <video:description>General: Animated demonstration of the LiveMath computer algebra software.</video:description>
      <video:player_loc>https://www.distancecalculus.com/assets/animations/livemath-spinning.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/assets/animations/livemath-spinning.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/barth-sextet-1/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Barth Sextic</video:title>
      <video:description>Algebraic Geometry: Barth Sextic - a degree-6 algebraic surface with 65 ordinary double points, the maximum number possible for a sextic in three-dimensional space.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/BarthSextet1.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/BarthSextet1.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/barth-sextet-2/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Barth Sextic (alternate view)</video:title>
      <video:description>Algebraic Geometry: Alternate rotation of the Barth Sextic, a classic singular algebraic surface studied in algebraic geometry.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/BarthSextet2.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/BarthSextet2.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/chair-surface/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Chair Surface</video:title>
      <video:description>Algebraic Geometry: Chair Surface - an algebraic surface whose shape resembles a chair, defined by a quartic polynomial equation.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Chair.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Chair.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/clebsch-cubic/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Clebsch Diagonal Cubic</video:title>
      <video:description>Algebraic Geometry: Clebsch Diagonal Cubic - a smooth cubic surface famously containing exactly 27 real lines.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Clebsch2.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Clebsch2.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/goursat-surface/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Goursat Surface</video:title>
      <video:description>Algebraic Geometry: Goursat Surface - a quartic algebraic surface named after Édouard Goursat.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Goursat.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Goursat.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/heart-surface/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Heart Surface</video:title>
      <video:description>Algebraic Geometry: Heart Surface - a sextic algebraic surface defined by a heart-shaped polynomial equation.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Heart.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Heart.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/tanglecube/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/animations/Tanglecube.png</video:thumbnail_loc>
      <video:title>Tanglecube</video:title>
      <video:description>Algebraic Geometry: Tanglecube - a quartic algebraic surface with cube-like symmetry.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Tanglecube.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Tanglecube.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/bumpy-surface/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Bumpy Surface</video:title>
      <video:description>Differential Geometry: A smooth perturbation of the sphere, illustrating differential-geometric concepts of curvature variation.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Bumpy.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Bumpy.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/double-torus/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Double Torus (Genus 2)</video:title>
      <video:description>Differential Geometry: Genus-2 surface - the double torus, a fundamental example in differential topology and differential geometry.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/DoubleTorus.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/DoubleTorus.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/gyroid/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Gyroid Minimal Surface</video:title>
      <video:description>Differential Geometry: Gyroid - a triply-periodic minimal surface discovered by Alan Schoen, with zero mean curvature everywhere.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Gyroid.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Gyroid.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/scherk-fifth/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Scherk's Fifth Surface</video:title>
      <video:description>Differential Geometry: Scherk's fifth minimal surface - a classical example of a doubly-periodic minimal surface.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/ScherkFifth.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/ScherkFifth.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/schwarz-surface/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Schwarz Minimal Surface</video:title>
      <video:description>Differential Geometry: Schwarz triply-periodic minimal surface - a foundational example in the differential geometry of minimal surfaces.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Schwartz.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Schwartz.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/torus/</loc>
    <video:video>
      <video:thumbnail_loc></video:thumbnail_loc>
      <video:title>Torus</video:title>
      <video:description>Differential Geometry: The torus - the canonical smooth surface of genus 1, central to differential geometry and topology.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Torus.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Torus.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/lorenz-flow/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/animations/LorenzFlow1.png</video:thumbnail_loc>
      <video:title>Lorenz Attractor</video:title>
      <video:description>Differential Equations: The Lorenz attractor - the canonical strange attractor of chaos theory, arising from a simplified model of atmospheric convection.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/LorenzFlow1.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/LorenzFlow1.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/duffing-oscillator/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/animations/DuffingOscillator1.png</video:thumbnail_loc>
      <video:title>Duffing Oscillator</video:title>
      <video:description>Differential Equations: The Duffing oscillator - a forced nonlinear oscillator whose phase-space trajectories exhibit chaotic behavior.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/DuffingOscillator1.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/DuffingOscillator1.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/laplace-transform/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/animations/LPT.png</video:thumbnail_loc>
      <video:title>Laplace Transform</video:title>
      <video:description>Differential Equations: Animation visualizing the Laplace Transform applied to differential equations.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/LPT.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/LPT.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/flow-nonautonomous/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/animations/flow-nonautonomous.png</video:thumbnail_loc>
      <video:title>Non-Autonomous Flow</video:title>
      <video:description>Differential Equations: Animation of a non-autonomous flow whose velocity field varies with time.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/flow-nonautonomous.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/flow-nonautonomous.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/thomas-attractor/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/animations/ThomasAttractor1.png</video:thumbnail_loc>
      <video:title>Thomas Attractor</video:title>
      <video:description>Honors Differential Equations: The Thomas cyclically symmetric attractor - a strange attractor arising from a system with three-fold rotational symmetry.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/ThomasAttractor1.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/ThomasAttractor1.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
  <url>
    <loc>https://www.distancecalculus.com/introvideos/watch/aizawa-attractor/</loc>
    <video:video>
      <video:thumbnail_loc>https://www.distancecalculus.com/animations/Aizawa1.png</video:thumbnail_loc>
      <video:title>Aizawa Attractor</video:title>
      <video:description>Honors Differential Equations: The Aizawa attractor - an exotic strange attractor whose trajectories trace out a sphere with a protruding tube.</video:description>
      <video:player_loc>https://www.distancecalculus.com/animations/Aizawa1.mp4</video:player_loc>
      <video:content_loc>https://www.distancecalculus.com/animations/Aizawa1.mp4</video:content_loc>
      <video:duration>10</video:duration>
      <video:publication_date>2026-01-01T00:00:00Z</video:publication_date>
      <video:family_friendly>yes</video:family_friendly>
      <video:live>no</video:live>
    </video:video>
  </url>
</urlset>
