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  All Sites - 4632 items found, showing 4351 to 4400

  1. Tutor Pace - Tutorpace Inc.
    Online homework help tutoring. Free math resources include descriptions of and primers for pre-algebra, algebra, geometry, trigonometry, statistics, and calculus. ...more>>

  2. TutorTeddy.com
    Online tutoring sessions across grades in arithmetic, algebra, statistics, probability, calculus, geometry, and trigonometry. The TutorTeddy.com site also freely offers more than a hundred chalkboard video lectures and worked problems. ...more>>

  3. TutorVista - TutorVista.com
    Interactive lessons, worksheets, and homework help for math students grades 3-12 from this online education company. ...more>>

  4. Tutor World Online
    This online tutoring service sells homework help and SAT preparation packages. The Tutor World Online journal posts free primers in math. ...more>>

  5. TuvaLabs - Tuvalabs LLC
    Common Core-aligned math learning units based on "topics, news stories, and significant events occurring in student's life outside school," such as sports and nutrition. ...more>>

  6. TuxBlocks - Thomas Price
    Click and drag colorful block representations of constants and coefficients from one side of the equation to the other, step by step, to isolate the variables and solve the algebra problems. Points earned through such diagram-driven, mouse-only algebraic ...more>>

  7. Tversky's Legacy Revisited - Keith Devlin (Devlin's Angle)
    "Amos Tversky died earlier this year. To mathematicians, the Stanford-based psychologist is best known for the research he did with his colleague Daniel Kahneman in the early 1970s, into the way people judge probabilities and estimate likely outcomes ...more>>

  8. Twenty Tosses (TEAMS) - Jeannie Toshima; TEAMS Distance Learning, Los Angeles County Office of Education
    Toss a coin twenty times, and share class results. Students predicted how many heads or tails they might get if they toss a coin 20 times; tossed coins 20 times and recorded their results; compared their predictions with the actual results; teachers collected ...more>>

  9. Two Equals One? - Jim Loy
    A proof that 2=1, what's not "legal" about it, and a discussion of infinity. ...more>>

  10. The Two-Headed Quarter by Joseph Ganem - Chartley Publishing, LLC
    A companion site to The Two-Headed Quarter, written by a physicist scrutinizing day-to-day financial decisions, such as "How far should you drive to buy cheaper gas?" and "Is money saved when you buy on sale?" and "How far should you drive to save money?" ...more>>

  11. Two Trains - Math Forum, a Classic Problem from the Ask Dr. Math FAQ
    Two trains leave different cities heading toward each other at different speeds. When and where do they meet? ...more>>

  12. Tying Down a Random Walk - Ivars Peterson (MathTrek)
    For many men, the ordeal of fashioning a neat tie knot is fading into the distant past. It seems ironic that two physicists have now put necktie knots back on center stage. Thomas M. A. Fink and Yong Mao of the Cavendish Laboratory in Cambridge, England, ...more>>

  13. Typing Math - Math Forum, Ask Dr. Math FAQ
    How should I type exponents? What about square roots? Why not use tabs? May I send attachments? ...more>>

  14. UCALC - Daniel Corbier
    Windows shareware tools to compute compound interest, convert from miles to kilometers, solve a quadratic equation, plot a 3D surface, or simply add up bills. Features include: Expression Evaluator (evaluates expressions such as "5+4*10-13"); Unit Converter; ...more>>

  15. UC Museum of Paleontology - University of California at Berkeley
    On-line exhibits, education and outreach programs, catalogs and collections, and links to other science and museum sites. Paleontology incorporates many different kinds of data from different fields. Search for type specimen data from the museum's Catalogs ...more>>

  16. UCSB Department of Mathematics Center for Mathematical Inquiry - Regents of the University of California
    Developing "inquiry-based learning approaches in the teaching of mathematics and a research base that examines teaching and learning through inquiry-based practices." See past workshops, course materials for University of California Santa Barbara (UCSB) ...more>>

  17. UK Mirror Service - Joint Information Systems Committee, Higher Education Funding Councils, UK
    Formerly HENSA, this national software archive service benefits the higher education and research community in the UK, funded by the Joint Information Systems Committee of the Higher Education Funding Councils. It maintains copies of electronic archives ...more>>

  18. The Ultimate Puzzle Site - van Gassel, Heijmans, van Veldhoven
    A site in English and Dutch by three Dutch students. Contents include: Various Basic Puzzles and Riddles (no mathematics); Harder Puzzles and Riddles (no mathematics); Mathematical and Logic-deductional Puzzles with solutions; Brain-Teasers; and Complex ...more>>

  19. ULTRALAB - Anglia Polytechnic University, U.K.
    A research centre that writes software for learners of all ages and researches all aspects of the use of technology in learning. Reports, papers, and articles; 'old' software and hardware computing archive. ...more>>

  20. Unbreakable Ciphers - Jim Loy
    Proving that if the method of encryption is complicated enough, almost any encrypted message can be unbreakable. ...more>>

  21. Uncle Bob's Puzzles - Robert & Claire Mead, Haverhill, NH, USA
    Math and logic problems (no solutions); if you have questions, want a hint, or want to submit a solution you're invited to email the author. Asterisks indicate greater difficulty: Blind Cowboy; A Game of Catch; The Next Three; Grandpa's Birthday; Square ...more>>

  22. UNdata - United Nations Statistics Division
    Search across the UN's statistical databases: education, human development, population, trade, gender, and more. Preview, download, and filter results by sources such as the State of the World's Children (SOWC) and Millennium Development Goals (MDG). ...more>>

  23. Understanding Algebra - James Brennan, Boise State University
    In addition to "stuff to play with" on the web (a Graphing Applet (for exploring slope and intercepts of straight lines), a Prime Factorization Machine, a Prime Number List, a Quadratic Equation Solver, and a Quadratic Function Plotter), this book's full ...more>>

  24. Understanding Mathematics: From Counting to Calculus - Keith Kressin, K Squared Publishing, Inc.
    A comprehensive book for anyone who desires clear and concise math explanations, written for a non-technical audience to cover the math fundamentals normally taught from first grade through college (for more information, see the Table of Contents). ...more>>

  25. Understanding Temperatures - NASA Lewis Learning Technologies Project
    These were the low temperatures recorded for January 15 in these cities: Minneapolis: - 6 degrees; Cleveland: 5 degrees; Fargo: -11 degrees; Chicago: 2 degrees; Milwaukee: -3 degrees; Detroit: -1 degree. Which city had the low temperature closest to 0 ...more>>

  26. Undusting Napier's Bones - Alexandros Diploudis; Heriot-Watt University, UK
    Biographical information about the Scottish mathematician John Napier, generally considered the inventor of logarithms, with a Java simulation of Napier's bones, a method for performing arithmetic operations by the manipulation of rods (called "bones" ...more>>

  27. Une Balade dans le Monde des Polyèdres - Maurice Starck
    Les polyèdres convexes, non convexes, et intéressants: les polyèdres uniformes, les stellations de l'icosaèdre, des tétraèdres remarquables, le découpage d'un tétraèdre par un plan, les deltaèdres ...more>>

  28. Unfair Dice - Ivars Peterson (MathTrek)
    Dice represent an intriguing example of the interplay between randomness, chance, and physical law. The simplest mathematical model of a standard die is based on the assumption that the die is a perfect cube. A cube has six faces, and each face has an ...more>>

  29. Unicursal curves and knot diagrams (Geometry and the Imagination) - Conway, Doyle, Gilman, Thurston; The Geometry Center
    A unicursal curve in the plane is a curve that you get when you put down your pencil, and draw until you get back to the starting point. As you draw, your pencil mark can intersect itself, but you're not supposed to have any triple intersections. You ...more>>

  30. The Uniform Polyhedra - Roman Maeder
    A shortened version of the notebook Polyhedra.ma from Illustrated Mathematics [Gloor/Amrhein/Maeder95]. Uniform polyhedra have regular faces and congruent vertices. Allowing for non-convex faces and vertex figures, there are 75 such polyhedra, as well ...more>>

  31. Unit Conversion and Day of the Week - Stephen Phillips
    Convert between units of distance, area, volume, mass, speed, temperature, pressure, energy, power, or force online, or find the day of the week for a given date. There is also a list of conversion factors for various units, including units of radiation, ...more>>

  32. UnitConversion.org
    Perform online unit conversions for volume, distance, temperature, time, speed, and more for a total of 2,100 kinds of units in 78 different categories. ...more>>

  33. Unit Conversions, Unit Cancellation - Math Forum, Ask Dr. Math Common Question
    A selection of answers to questions about unit conversions and cancellations, from "Convert: 3.25 cm to millimeters...." to "If you can run 100 meters in 10 seconds, how long, in days, hours, and minutes, does it take you to run 12,800,000 meters?" ...more>>

  34. Unit Converter
    The converter works for units of area, energy, pressure, volume, temperature, mass, length, numbers, velocity etc. You put in a number and select a base unit and select a unit to convert to. The conversion result will immediately appear in the output ...more>>

  35. The United States and the Metric System - Office of Information Services, National Institute of Standards and Technology (NIST)
    A capsule history, with questions and answers, a metric chocolate chip cookie recipe, and some sample size relations (kilogram of butter to pound, etc.). ...more>>

  36. United States Historical Census Data Browser - Paul Bergen
    A database on the people and the economy of the US for each state and county from 1790 to 1970. Data include historical census figures and general population characteristics such as "number of free white females," "number of free colored males," and "number ...more>>

  37. UnitJuggler: Online Unit Conversions - Pierre Di Marco
    UnitJuggler offers free unit conversions, for distance and length, area, volume, weight and mass, temperature, time, and more. ...more>>

  38. Unit Measurement Conversion - NASA Lewis Learning Technologies Project
    Which statement is NOT correct? 96 cups = 6 gallons; 9 days = 216 hours; 84 ounces = 7 pounds; 2 miles = 10,560 feet. A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test. ...more>>

  39. Units of Measurement - NASA Lewis Learning Technologies Project
    Which object is matched with its appropriate unit of measurement? Milligrams for the weight of a textbook; Kilometers for the length of a sailboat; Grams for the weight of a needle; Kiloliters for the capacity of a reservoir. A detailed answer is provided. ...more>>

  40. UnitWiz
    An online calculator converts units of length, area, density, energy, force, mass, power, pressure, speed, temperature, or volume. ...more>>

  41. The Universal Currency Converter - Xenon Laboratories Incorporated
    An interactive currency table. Versions are available in English, Spanish, and Swedish. The Universal Currency Converter™ allows you to perform interactive foreign exchange rate conversion on the Internet. Type the amount of source currency in the input ...more>>

  42. The University of Chicago School Mathematics Program (UCSMP)
    A K-12 curriculum begun in 1983, with educational materials designed to bring the real world into the classroom, emphasizing reading, problem-solving, everyday applications, and the use of calculators, computers, and other technologies. Unnecessary repetition ...more>>

  43. Unlocking Ways to Make Your Math Simple - Rajinder Goswami
    An ebook meant to enhance calulating skills. It focuses on comprehension, speed, and accuracy. Two Flash examples provided; download the whole book for a fee. ...more>>

  44. Unlucky in Cards (Math Chat) - Frank Morgan, MAA Online
    In his Contract Bridge syndicated column Phillip Alder says that the odds against getting a "Yarborough - a hand with no card higher than a nine" are 1827 to 1, and that the odds against two players getting a Yarborough on the same deal are about 182 ...more>>

  45. Unsilence Students' Voices - Suzanne Alejandre
    Article discussing how to provide an opportunity for all students to contribute to math classroom discussions. Originally published in the September, 2012, issue of the CMC ComMuniCator, journal of the California Mathematics Council, this article intersperses ...more>>

  46. Untangling the Mathematics of Knots (MegaMath) - Nancy Casey; Los Alamos National Laboratory
    Fundamentals of knot theory for a wide range of levels - a variety of activities for exploring knots made from pieces of rope. Students can make and verify observations about knots, classify them, combine them, and find ways to determine if two knots ...more>>

  47. US2020
    By organizing a million mentors from industry, this organization hopes to provide "uplifting moments of discovery to children through real-world, hands-on projects and academic coaching" in science, technology, engineering and math (STEM) fields. The ...more>>

  48. USA Map Jigsaw Puzzle - Jill Britton
    Students are challenged to move each of the contiguous 48 states into the correct position on the map. Note the number of colors necessary for separation of the states. ...more>>

  49. U.S. Census Bureau
    Information (searchable by keyword and browseable by subject) from summary data files across cities, towns, counties, states, and other geographic and demographic boundaries, useful for many purposes from allocating representation in legislative bodies ...more>>

  50. U.S. Department of Education
    Extensive and varied education information in categories including: educational initiatives (President's and Secretary's priorities), funding opportunities, student financial assistance, research and statistics, news and events, programs and services, ...more>>


 
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