site title: Public Domain Materials

​#1. Insights and Innovations

#2. Esperanto-based front-end for Wikipedia

#3. bio sketch of Mike Jones

#4. general blog of the author (Mike Jones) of this website

#5. blogs on the errors and omissions in the works of others
               (blogoj pri la eraroj kaj ellasoj en la verkoj de aliaj)

#6. Barebones Mathematics Dictionary

#7. artikoloj en Esperanto

#8. Uncle Bob's Intro to Number Theory

#9. blue kernel versions of Wikipedia articles

#10. Mathematics Instruction -- Arithmetic, Algebra, Calculus

#11. ROBOTIC MATHEMATICS TUTORING

#12. Get the prime factorization of a number

#13. Explore Mathematics via writing computer programs in BASIC
        (Interactive Programming Environment in BASIC)

#14. How to memorize large numbers, fast and easy
                              (memorization technique of Allan Krill - awesome!)

#15. (folder) Websites for Kids, and for their Educators

#16. Rimedoj por helpi al lernantoj de la angla

#17. Resources for helping learners of English

#18. Learning Materials for Young Students

#19. (ekstera ligo) Trovi Frazon Anglalingvan

#20. (folder) Writing Assignments

​#21. (folder) ESL Support Materials

#22. (folder) Student Exercise Tasks (for Mathematics, Language Arts, etc.) - autocorrected

#23. (folder) Dinosaurs

#24. Medicare

#25. (folder) Circumference of the Earth

#26. (online document) Queries

#27. (online document) Notes and Proposals on Technical Issues

#28. (external link) Mathematics Research Notes

#29. (external link) Free Resource: Tests, Problems & Flashcards

#30. (external link) Free Resource: Classroom Assessment Tools

#31. (folder) College Scholarship Contest

#32. (external link) Admissions Blog: What it's like to attend (such-and-such) school

#33. (dosierujo) Fantaso - Jack Vance

#34. (folder) Quiz Questions

#35. (folder) The Difference between High School and College

#36. (folder) Mathematics Tests / Quizzes / Exercises

#37. (folder) Mind Map Technology
               (specific example used: that of the so-called "Pizza Theorem")

#38. (folder) The Pastiche Proof of the Pythagorean Theorem

#39. (external link) Public Domain Poetry

#40. (external link) Public Domain Databases
               (This is the link to the Wikipedia article on Public Domain Databases, with external links to them.)

#41. (folder) The Two-Body Problem
               (planetary motion)
               (orbital mechanics)
               (Kepler's Laws)
               (motion of the Earth around the Sun)

#42. (folder) Dirichlet's Theorem
               (i.e., "Every proper arithmetic progression contains a prime.")

#43. (external link) Flexagons
               (a type of paper-folding amusement)

#44. (folder) Chinglish

#45. (folder) The Dot and the Line: A Romance in Lower Mathematics

#46. (folder) Vector Cross Product

#47. (folder) Some Special Topics in Plane Geometry

#48. (external link) Ipernity (a great document / photo sharing website)

#49. (folder) The Twisted Talk of Teachers

#50. (folder) The Uncanny Valley
               (answers the question, "Why are zombies so eerie, but talking animals so endearing?")
               (Masahiro Mori's concept)

#51. (individual item) The Most Famous Perfect Square

#52. (individual item) Practice in Multiplying Two Binomials (Set #534)

#53. (individual item) Subtracting a Larger Number from a Smaller Number

#54. (external link) Discussion: Why is the nomenclature of Elementary Geometry so bad?

#55. (folder) Quadratic Formula

#56. (individual item) Practice in Taking the Square Root

#57. (folder) Graphing

#58. (folder) Foreground Mathematics Task List

#59. (folder) Some Mathematics Awareness Items

#60. (folder) Hashimoto Topology

#61. (external link) Webster's Revised Unabridged Dictionary (1913)
                    61.1 an essay discussing it;
                    61.2 the text itself.

#62. (folder) Permutations and Combinations

#63. (folder) free sheet music (website name: "Music for Music Teachers")

#64. (folder) Equivalents of the Axiom of Choice

#65. (ekstera ligo) Common Misconceptions (Wikipedia article)

#66. (folder) Star Ship Training Academy

#67. (external link) Reddit ("the front page of the internet")

#68. (ekstera ligo) Komputeko ("La multlingva prikomputila terminokolekto")

#69. (folder) Military Alphabet

#70. (external link) The raw power of storytelling

#71. (external link) Typing Practice (- Learn how to touch type!)

#72. (folder) Crossword Puzzles

#73. (folder) System Fragments

#74. (folder) Pure Theory of One-Variable Calculus

#75. (reserved for future use)

#76. (folder) link-lists for students (links for students)

#77. (folder) The Valley of Death

#78. (external link) Comfort Experts Inc. (Air Conditioning, Heating & Air Quality)

#79. (folder) Passages Portal

#80. (folder) Bodacious Quotes

#81. (external link) EqWorld (The World of Mathematical Equations) 

#82. (folder) Asymptotics

#83.  (folder) Chandler's essay "The Simple Art of Murder"

#84. (folder) Medical Science

#85. (folder) Notation Regarding Numerical Progressions

#86. (folder) Burton Hill Elementary School (Fort Worth, Texas)

#87. (folder) interactive phonemic chart for Mercan English
          (i.e., pronunciation symbols)

#88. (external link) Why and how the seasons change

#89. (external link) American Automobile Association (AAA)

#90.  (folder) Practice in Proving Theorems

#91. (folder) MATH WORDS (Pat Ballew)

#92. (folder) Mathematics Dictionary
               (Dictionary of Mathematics and Mechanics)

#93. (folder) Mathematical Models Catalog

#94. (folder) Lapses in Logic

#95. (folder) great books for exploring mathematics (other than kids’ books and textbooks)

#96. (folder) FWISD Parent Portal (register / login)

#97. (reserved for future use)

#98. (reserved for future use)

#99. (folder) Esperanto

#100. (external link) Wiktionary Supercharged

#101. (folder) Answer Keys

#102. (reserved for future use)

#103. (folder) Trigonometry Problems

#104. (folder) Ordinate Calculation Exercises

#105. (reserved for future use)

#106. (reserved for future use)

#107. (individual item) Absolute Value Acrobatics 

#108. (individual item) Angle-Measure Mode

#109. (reserved for future use)

#110. (individual item) Adding of Angles When Multiplying Complex Numbers

#111. (individual item) The Birthday Problem

#112. (individual item) Minimal Words with a Silent Internal Isolated Vowel

#113. (individual item) Doubleknit (phonetic transcription code)

#114. (reserved for future use)

#115. (reserved for future use) 

#116. (reserved for future use)

#117. (individual item) Average Annual Growth Rate Example 121 

#118. (individual item) Average Annual Growth Rate Example 122 

#119. (individual item) Average Annual Growth Rate Explanation 

#120. (reserved for future use)

#121. (individual item) The Bow-and-Arrow Problem 

#122. (individual item) Calculation Set 528 Based on Angle and Radius 

#123. (individual item) Cayley-Hamilton Theorem: Illustration #101 

#124. (reserved for future use)

#125. (individual item) Concrete Summation Exercise 321 

#126. (individual item) Concrete Summation Exercise 322 

#127. (individual item) Concrete Summation Exercise 323 

#128. (individual item) Concrete Summation Exercise 324 

#129. (individual item) Concrete Summation Exercise 325 

#130. (individual item) Concrete Summation Exercise 326 

#131. (individual item) Conditional Probability: Slam Dunk 1 

#132. (individual item) Conditional Probability: Slam Dunk 2 

#133. (individual item) Conditional Probability: Slam Dunk 3 

#134. (individual item) Conditional Probability: Slam Dunk 4 

#135. (individual item) Conditional Probability: Slam Dunk 5 

#136. (individual item) Conditional Probability: Slam Dunk 6 

#137. (reserved for future use)

#138. (individual item) Derivative of i cubed over 3 

#139. (individual item) Divisor Summation Example 

#140. (individual item) Double Summation Example 825 

#141. (individual item) Double Summation Exercise 923 

#142. (individual item) Double Summation Exercise 

#143. (individual item) Doubling Your Money in a Given Amount of Time 

#144. (external link) Marketing Advice (e.g., "Keep your message simple, and keep it relevant.")

#145. (reserved for future use)

#146. (individual item) First Application of Young's Inequality 

#147. (individual item) Flora's Theorem 1 on Arithmetic Progressions 

#148. (individual item) Flora's Theorem 2 on Arithmetic Progressions 

#149. (individual item) The GM-AM Inequality 

#150. (individual item) Heron's Formula for the Area of a Triangle 

#151. (reserved for future use)

#152. (individual item) Identification of Set Properties: Exercise 1 

#153. (individual item) Illustration of Logs and Anti-Logs 

#154. (individual item) Mathematics Exercise 800-42-3574 

#155. (individual item) Mathematics Exercise 10305 

#156. (individual item) Mathematics Exercise 10306 

#157. (individual item) Mathematics Exercise 10307 

#158. (individual item) Money Doubling Example 21 

#159. (individual item) Morley's Miracle 

#160. (reserved for future use)

#161. (individual item) Napierian Calculus Component 

#162. (individual item) The Number of Items in a Summation 

#163. (individual item) Overview of the Computational Formula for the Logarithm 

#164. (reserved for future use)

#165. (individual item) Please excuse my dear aunt Sally 

#166. (individual item) Probability: Breakfast Survey: Exercise 1 

#167. (individual item) Probability: Breakfast Survey: Exercise 2 

#168. (individual item) Probability: Breakfast Survey: Exercise 3 

#169. (individual item) Probability: Breakfast Survey: Exercise 4 

#170. (individual item) Probability: Breakfast Survey: Exercise 5 

#171. (individual item) Probability: Breakfast Survey: Exercise 6 

#172. (individual item) Pronunciation Examples of Exponentiation  

#173. (individual item) Quantification over Z 

#174. (individual item) Scratch Work for the Natural Logarithm of 2 

#175. (individual item) Simplest Examples of the FTC 

#176. (reserved for future use)

#177. (reserved for future use)

#178. (individual item) Standard Exercise on the Euclidean Algorithm 

#179. (reserved for future use) 

#180. (folder) Formula for the Sum of an Initial Segment of a Geometric Progression

#181. (individual item) Summand Manipulation Exercise 21 

#182. (individual item) Summand Manipulation Exercise 22 

#183. (individual item) Summation Example 7314 

#184. (individual item) Summation Example 8271 

#185. (individual item) Summation Example 30182 

#186. (individual item) Summation Example 60037 

#187. (individual item) Superannuation Formula 

#188. (individual item) tangent of a sum and difference 

#189. (individual item) Trig Example 30425 

#190. (individual item) Trig Example 819025 

#191. (reserved for future use)

#192. (reserved for future use)

#193. (individual item) Young's Inequality 

#194. (reserved for future use)

#195. (individual item) The Zero-Derivative Theorem 

#196. (reserved for future use)

#197. (individual item) Where does a sequence begin? 

#198. (individual item) Vocabulary for the derivation of the formula for the area of a triangle 

#199. (individual item) Verbal Descriptions to Symbolic Form 

#200. (reserved for future use)

#201. (reserved for future use)

#202. (individual item) Ungrouped Frequency Distribution Table

#203. (individual item) Types of Pendulums 

#204. (reserved for future use)

#205. (individual item) Two Theorems on Radian Angle Measure

#206. (reserved for future use)

#207. (reserved for future use)

#208. (reserved for future use)

#209. (reserved for future use) 

#210. (individual item) Trigonometry Overview 

#211. (individual item) Triangles and Quadrilaterals 

#212. (reserved for future use)

#213. (individual item) Recipe for Chinese Dumplings 

#214. (reserved for future use)

#215. (reserved for future use)

#216. (individual item) Pre-Calculus Vocabulary

#217. (individual item) Differential Equations: DC (Direct Current) Circuit 

#218. (individual item) First Order Linear Differential Equations 

#219. (individual item) Cornerstone Formula 

#220. (reserved for future use)

#221. (individual item) Differentiation Exercise 2048 

#222. (individual item) 4 x 4 (empty) Grid 

#223. (individual item) 6 x 6 (empty) Grid 

#224. (individual item) 12 x 12 (empty) Grid 

#225. (individual item) Diagram for the Tank Reactor 

#226. (reserved for future use)

#227. (reserved for future use)

#228. (reserved for future use)

#229. (reserved for future use)

#230. (reserved for future use)

#231. (individual item) Change of Concentration in a Tank 

#232. (reserved for future use)

#233. (reserved for future use)

#234. (reserved for future use)

#235. (individual item) The Identity Function 

#236. (individual item) Differential Equations: Document 750820 

#237. (individual item) Differential Equations: Document 770200 

#238. (individual item) Separation of Variables 

#239. (reserved for future use)

#240. (external link) Whispering Room
               (you can hear what is said far away in the room)

#241. (individual item) Canonical Algebraic Exercise 

#242. (reserved for future use)

#243. (individual item) Examples of Function Composition 

#244. (individual item) Examples of Function Evaluation 

#245. (reserved for future use)

#246. (reserved for future use)

#247. (individual item) The Pendulum 

#248. (reserved for future use) 

#249. (reserved for future use)

#250. (reserved for future use)

#251. (reserved for future use)

#252. (reserved for future use)

#253. (reserved for future use)

#254. (individual item) Pascal's Triangle to Row 12 

#255. (reserved for future use)

#256. (individual item) Average Annual Growth Rate Homework Assignment 1 

#257. (individual item) The Chain Rule Applied to log..(xi) 

#258. (reserved for future use)

#259. (reserved for future use)

#260. (reserved for future use)

#261. (individual item) Function-Evaluation Exercise 1024 

#262. (folder) Long Linear Equations 

#263. (reserved for future use)

#264. (reserved for future use)

#265. (reserved for future use)

#266. (reserved for future use)

#267. (reserved for future use)

#268. (reserved for future use)

#269. (reserved for future use)

#270. (reserved for future use)

#271. (external link) Varsity Tutors
               ("Affordable 1-on-1 Home Tutoring by SMU/TCU Grads!")
               ("Award Winning Test Prep & Academic Tutoring in Dallas Fort Worth, TX")

#272. (reserved for future use)

#273. (external link) The Nine Dots Puzzle

#274. (reserved for future use)

#275. (individual item) GM-AM Inequality for Two Numbers

#276. (individual item) Statistics Terminology and Phraseology Long List

#277. (reserved for future use)

#278. (reserved for future use)

#279. (reserved for future use)

#280. (reserved for future use)

#281. (reserved for future use)

#282. (reserved for future use)

#283. (reserved for future use)

#284. (reserved for future use)

#285. (reserved for future use)

#286. (reserved for future use)

#287. (external link) article titled "3 poisoning hazards that are hiding in your home"

#288. (reserved for future use)

#289. (individual item) The product of two binomials

#290. (individual item) Definition of Leap Year

#291. (individual item) Some Examples of Auto-Antonyms

#292. (external link) List of Nursery Rhymes

#293. (external link) Site Title: EnglishSpeak.com - Free English Speaking Online
            URL: http://www.englishspeak.com
            Description: 100 Dialogs, 1000 Phrases, 1500 Vocabulary words

#294. (individual item) Vocabulary

#295. (folder) Nursery Rhymes

#296. (reserved for future use)

#297. (external link) Create a website for free

#298. (external link) Internet Mathematics Library (of The Math Forum, of Drexel University)

#299. (external link) Visual Calculus (expository presentation of Mamikon's work, by Tom Apostol)

#300. (external link) catalog of proofs of the Pythagorean Theorem

#301. (external link) Mathematics Stack Exchange Q & A Website

#302. (external link) InterMath Dictionary of Middle School Mathematics

#303. (external link) Springboard to Languages

#304. (external link) Nothing But Motion
               (the Reciprocal System of Dewey B. Larson)

#305. (external link) The Math Reference Project (DIY tutorial resource)

#306. (external link) Explanation, by Peter Suber, of material implication

#307. (external link) Books, recommended by J. M. Cargal, in the Mathematical Sciences

#308. (external link) English Language and Usage Stack Exchange Q & A website

#309. (external link) Differential Approximation

#310. (external link) Mathematics Handbook

#311. (external link) Mathematics Problem Solver

#312. (external link) encyclopedia of mathematics

#313. (reserved for future use)

#314. (external link) Stack Exchange Site for Quantitative Finance

#315. (external link) Sound Symbolism (mentions Margaret Magnus, and the Bouba/kiki effect)

#316. (reserved for future use)

#317. (external link) Hymn on Solitude

#318. (reserved for future use)

#319. (external link) calculators

#320. (external link) Internet Anagram Server

#321. (external link) ProofWiki, the online compendium of mathematical proofs

#322. (external link) Staedtler whiteboard markers

#323. (reserved for future use)

#324. (external link) General Topology examples

#325. (external link) unrestricted publication of science materials

#326. (external link) tongue-twisters

#327. (external link) Derivative of the Sine Function

#328. (external link) Options Pricing (Black-Scholes)

#329. (external link) Abundant energy without the fear of weapons: Thorium

#330. (external link) Part-of-Speech –Tagging

#331. (external link) numerical (as opposed to symbolic) evaluation of integrals

#332. (external link) sum of the reciprocals of the squares (Basel Problem)

#333. (reserved for future use)
 
#334. (reserved for future use)

#335. (reserved for future use)

#336. (reserved for future use)

#337. (external link) finding a word based on knowing some of its letters

#338. (reserved for future use)

#339. (reserved for future use)

#340. (external link) longest ladder around a corner

#341. (external link) Pronunciation issues

#342. (external link) re: foreign-language learning (/ increasing vocabulary)

#343. (external link) Spacing Effect

#344. (reserved for future use)

#345. (reserved for future use)

#346. (external link) Physics Dictionary

#347. (external link) Teacher-Created Materials

#348. (external link) National Clearinghouse for English Language Acquisition

#349. (external link) Increasing Vocabulary

#350. (reserved for future use)

#351. (external link) HyperStat Online Statistics Textbook

#352. (reserved for future use)

#353. (external link) The Visual Display of Quantitative Information

#354. (external link) Affect Control Theory

#355. (reserved for future use)

#356. (reserved for future use)

#357: (external link) Gallery of Distributions

#358. (external link) The Simon Laven Page (chatbots)

#359. (reserved for future use)

#360. (external link) Controlled Natural Language

#361. (external link) Controlled Vocabulary

#362. (external link) Critical essays on Frost’s “Stopping by Woods on a Snowy Evening”

#363. (external link) Cardinality

#364. (external link) the move to Bayesian data analysis

#365. (external link) Common Errors in English

#366. (external link) Growth of Functions

#367. (external link) Long-Term Behavior of Yield Curves

#368. (reserved for future use)

#369. (reserved for future use)
 
#370. (reserved for future use)

#371. (external link) A Handbook of Mathematical Discourse

#372. (reserved for future use)

#373. (reserved for future use)

#374. (reserved for future use)

#375. (reserved for future use)

#376. (reserved for future use)

#377. (external link) Jon’s Homeschool Resources

#378. (external link) grading on the curve, various meanings of

#379. (external link) Paul's Online Math Notes
               (for Calculus I, but sites for Calc II, III, and Linear Algebra also exist)

#380. (external link) R (Yes, that's right, just the letter "R")
               ("a free software environment for statistical computing and graphics")

#381. (reserved for future use)

#382. (reserved for future use)

#383. (reserved for future use)

#384. (external link) Math Fun Facts (hosted by the Harvey Mudd College Math Department)

#385. (external link) Open Educational Resources

#386. (external link) College Algebra syllabus

#387. (external link) Business Mathematics syllabus

#388. (reserved for future use)

#389. (external link) physical examples of hyperbolas

#390. (external link) surface area of an egg

#391. (external link) list of misnamed theorems

#392. (external link) "The greatest mathematical paper of all time"

#393. (external link) Mathematics for 12-year-olds

#394. (external link) Teaching mathematical induction

#395. (external link) book: How to Prove It (A Structured Approach)

#396. (external link) Originala Literaturo Esperanta

#397. (external link) Schoolhouse Technologies
              ("Printable Worksheets, Activities and Tests for the Differentiated Classroom")

#398. (external link) book: Before You Call the Doctor

#399. (external link) The Irreducible Needs of Children

#400. (reserved for future use)

#401. (external link) discussion and advice on English Composition (by Denise Comer)

#402. (external link) Mathematics Museum - maybe

#403. (external link) Education Portal ("Take Free Courses. Earn College Credit.")

#404. (external link) AC ONLINE ("FIND AFFORDABLE ONLINE COLLEGE OPTIONS")

#405. (external link) Math.com ("The World of Math Online") (curriculum for first grade through eighth grade)

#406. (external link) TODOS: Mathematics for ALL

#407. (external link) MSTE Online Resource Catalog
         (MSTE = Office for Mathematics, Science and Technology Education, University of Illinois)

#408. (external link) Math for All: Differentiating Math Instruction

#409. (external link) Coolmath.com 
          ("An amusement park of math and more... Lessons and games designed for fun!")

#410. (external link) MATH-PLAY.COM 
          ("FREE ONLINE MATH GAMES")

#411. (external link) National Library of Virtual Manipulatives

#412. (external link) Johnnie's Math Page 
          ("The Best Math for Kids and their Teachers")

#413. (external link) MATH is FUN

#414. (external link) AAA Math 
          ("features a comprehensive set of thousands of interactive arithmetic lessons")

#415. (external link) Spelling Lessons

#416. (external link) Geography of the States of the United States

#417. (external link) Geography of Nations of the World

#418. (reserved for future use)

#419. (external link) BRAIN TRAINING GAMES (Sudoku)

#420. (external link) How To Determine Remaining Daylight

#421. (external link) math for all dot com

#422. (reserved for future use)

#423. (external link) maths for all (British)

#424. (external link) la matematiko en la hispana

#425. (reserved for future use)

#426. (reserved for future use)

#427. (external link) list of 30 major Mercan companies

#428. (reserved for future use)

#429. (reserved for future use)

#430. (reserved for future use)

#431. (external link) Word in Context (examples sentences containing any word you specify)

#432. (external link) Mercer Quality of Living Survey

#433. (external link) educational computer games and activities for children

#434. (external link) U.S. Metric Association

#435. (external link) home improvement

#436. (reserved for future use)

#437. (external link) Obituary of English (= English is now a dead language)
            (satirical article on the poor English appearing nowadays in public forums)
            (Washington Post, Sunday, September 19, 2010)

#438. (external link) audio/visual presentation on intonation in English
            ("How to sound polite in English")

#439. (external link)
          Phlegmatic Scholarship: Ahem! A Cross-Cultural Study of the Signifying Throat-Clear
          - a nice example of a satirical article on Linguistics

#440. (reserved for future use)

#441. (external link) Fun with Words

#442. (external link) Formatting Math as Text 
          (info from the "Purplemath" website)

#443. (reserved for future use)

#444. (folder) sentitolo (items with no title)

#445. (reserved for future use)

#446. (reserved for future use)

#447. (online document) PTO Vocabulary
          (vocabulary of the Parent-Teacher Organization, for parents learning English as a second language)

#448 (reserved for future use)

#449. (external link) The Out-of-Kilter Algorithm

#450. (reserved for future use)

#451. (reserved for future use)

#452. (folder) Chick Lit

#453. (reserved for future use)

#454. (external link) Website of Patrick Barrow
          (author of the saying, "A failure of imagination is not an insight into necessity.")

#455. (external link) Accounting Software Package description/advertisement

#456. (individual item) Arithmetic Progressions

#457. (external link) Math Pages
               (extensive table of contents, with Physics and Music as well)

#458. (external link) Quotations
               (Newgrounds Log)

#459. (reserved for future use)

#460. (folder) HOW TO GET RICHES
               (advice from Benjamin Franklin)

#461. (external link) Education Resources Information Center (ERIC)
               (This is the link to the Wikipedia article on ERIC, which contains a link to ERIC itself)

#462. (individual item) Proof that -1 + (-1) = -2

#463. (individual item) Proof that -1 - 1 = -2

#464. (external link) joke greeting card: "Test Your REDNECK VOCABULARY!"

#465. (folder) juicy quotes from Cheryll Duffie

#466. (folder) Stack Exchange Suite of Q & A Websites

#467. (external link) Science Daily website (of science news)

#468. (reserved for future use)

#469. (external link) website of Jeffery Deaver
               (author of the thriller THE OCTOBER LIST, and many other acclaimed works)

#470. (external link) website of Joe Bob Briggs
               (drive-in movie critic extraordinaire)

#471. (external link) home-safety video
               (narrated by Amy Matthews)

#472. (folder) home chemistry
               (chemistry of things in the home / the chemistry behind Home Economics)

#473. (folder) paper microscope that you can carry in your pocket

#474. (reserved for future use)

#475. (external link) free online books
               ("Thousands of Full-Text Free Books")
               (address: www.fullbooks.com)
               (ebooks)

#476. (external link) List of American words not widely used in the United Kingdom

#477. (reserved for future use)

#478. (external link) Sinister Fonts

#479. (reserved for future use)

#480. (folder) Del Taco

#481. (folder) Fascinating Story: The Flexible Drinking Straw, invented by Joseph Friedman

#482. (folder) Fascinating Concept: Universal Design / Design for All / Inclusive Design

#483. (reserved for future use)

#484. (reserved for future use)

#485. (folder) "The language challenge -- facing up to reality"
                    (YouTube presentation by Claude Piron)

#486. (reserved for future use)

#487. (reserved for future use)

#488. (folder) Personal Productivity Q & A website (Stack Exchange)

#489. (folder) Project Management Q & A website (Stack Exchange)

#490. (dosierujo) Klaku

#491. (reserved for future use)

#492. (external link) Outcomes Theory

#493. (external link) the problem of siloing ("Don't siloize means under ends.")

#494. (external link) Proseology (Plain Language Internet Virtualization)

#495. (reserved for future use)

#496. (external link) Goya black bean soup (yummy!)

#497. (external link) Doubts (re: painting)

#498. (external link) advice on writing website copy

#499. (external link) Chick-fil-A (chicken sandwiches)

#500. (external link) Nutella (hazelnut spread - yummy!)

#501. (external link) first computer (Konrad Zuse Internet Archive)

#502. (reserved for future use)

#503. (external link) 1811 Dictionary in the Vulgar Tongue

#504. (external link) some needed inventions, according to Andrew Garrard
                    e.g., Virtual key caps, Teflon toilet bowl, Toast brownometer...

#505. (external link) Wordmall (a blog about the English language, by Michael J. Sheehan)

#506. (external link) 30 Tips to Help Keep Your Laundry from Making You Crazy
                    (from: The HarvardHomemaker, Christy)

#507. (external link) The Amazing Kreskin (mentalist)

#508. (reserved for future use)

#509. (external link) GYāN ADAB - Celebrating Literature

#510. (reserved for future use)

#511. (reserved for future use)

#512. (reserved for future use)

#513. (reserved for future use)

#514. (reserved for future use)

#515. (folder) Funny Book-Titles

#516. (folder) Lowdown on the Twin Towers

#517. (folder) Simulation of insect movement with respect to plant architecture and morphogenesis

#518. (folder) The Rise of Granular Computing

#519. (folder) Stealth and Spoiler Theorems
​
#520. (folder) fund performance

#521. (folder) AQAM (= Ask a question about Mathematics)

#522. (folder) The Cubic Formula
​
#523. (dosierujo) Diskutejo pri la Kuba Ekvacio

#524. (folder) Index to James Stewart's Calculus textbook (4th edition

#525. (folder) medical advance retarded - bacteriophages
​
#526. (folder) Me as Subject
​
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