1. How to Draw a Perfect Circle

  2. 5 Reasons We Like 5 Reasons Videos

  3. Reel

  4. Singing Pi-Gram

  5. Folding Space-Time

  6. Vi Hart's Guide to Comments

  7. Sphereflakes

  8. Snowflakes, Starflakes, and Swirlflakes

  9. Thanksgiving Turduckenen-duckenen

  10. Borromean Onion Rings

  11. Green Bean Matherole

  12. Optimal Potatoes

  13. Scary Sierpinski Skull Time

  14. Flex Mex

  15. Hexaflexagon Safety Guide

  16. Hexaflexagons 2

  17. Hexaflexagons

  18. Doodling in Math Class: Connecting Dots

  19. Dialogue for 2

  20. They Became What They Beheld: Medium, Message, Youtubery

  21. How To Make A Video About How To Make A Video About How To Make A Video About How To Make a Video...

  22. Sonnet on a Higgs-Like Particle

  23. A Song About A Circle Constant

  24. What was up with Pythagoras?

  25. Doodle Music

  26. Rhapsody on the Proof of Pi = 4

  27. Why Every Proof that .999... = 1 is Wrong

  28. 9.999... reasons that .999... = 1

  29. Two Non-Repeating Non-Normal Numbers (re: Pi and Shakespeare)

  30. Are Shakespeare's Plays Encoded within Pi?

  31. Fractal Fractions

  32. Wau: The Most Amazing, Ancient, and Singular Number

  33. Math Improv: Fruit by the Foot

  34. Angle-a-trons

  35. Open Letter to Nickelodeon, Re: SpongeBob's Pineapple under the Sea

  36. Doodling in Math: Spirals, Fibonacci, and Being a Plant [Part 3 of 3]

  37. Doodling in Math Class: Spirals, Fibonacci, and Being a Plant [2 of 3]

  38. Announcement: Vi Hart and Khan Academy Join Forces!

  39. Doodling in Math: Spirals, Fibonacci, and Being a Plant [1 of 3]

  40. Doodling in Math Class: Triangle Party

  41. Low-Frequency Blues

  42. What is up with Noises? (The Science and Mathematics of Sound, Frequency, and Pitch)

  43. Doodling in Math Class: Squiggle Inception

  44. Origami Proof of the Pythagorean Theorem

  45. Stop-Motion Sillyband Fight

  46. Re: Visual Multiplication and 48/2(9+3)

  47. Binary Hand Dance

  48. Oh No, Pi Politics Again

  49. Pi Is (still) Wrong.

  50. How To Snakes

  51. Hourglass Racing

  52. Wind and Mr. Ug

  53. Snow Day: You're a Linkage!

  54. Hyperbolic Planes Take Off!

  55. The Gauss Christmath Special

  56. Doodling in Math: Sick Number Games

  57. How to eat Candy Buttons like a Recreational Mathemusician

  58. Doodling in Math Class: Infinity Elephants

  59. Doodling in Math Class: Snakes + Graphs

  60. Doodling in Math Class: Stars

  61. Doodling in Math Class: Binary Trees

  62. Burning Paper Instruments - Last Quintet

  63. Harry Potter Septet: Filth, Mudbloods, Scum!

  64. Pachelbel's Music Box Canon in D

  65. Möbius Music Box

  66. Harry Potter Septet: His Eyes are as Green as a Fresh Pickled Toad

  67. The Sound of Paper: Paper Didgeriduel

  68. The Sound of Paper: Paper Storm

  69. Burning Paper Instruments: Autorequiem for Tube Harp