 Tides and Tide Prediction  Tony Phillips; Dept. of Mathematics, SUNYStony Brook
General information about tides and tide prediction: Priming/Lagging: a calculus with calculators exercise demonstrating the priming and lagging of the tides at Stony Brook. Samples of current tide predictions from the National Ocean Service. TideSounds:
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 TierneyLab Puzzles  John Tierney
Challenging word problems that "put ideas in science to the test," from The New York Times' science columnist. Solve and comment on the puzzles and their extra credit extensions. See also Tierney's blog entries on mathematics.
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 Tiesforteachers
A company in the UK selling neckties specifically with the school curriculum in mind. The growing collection includes ties for teachers of maths, science, English, music, ICT and other generalpurpose school subjects.
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 TI Graphing Educator Guide  Texas Instruments, Inc. (TI)
The educator’s guide to the benefits of using graphing calculators for classroom assignments and homework, including sections on research and what to say to parents.
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 Tiled CA  Brian Prentice
An interesting variation on the traditional 2D Cellular Automata simulators, for Windows.
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 TileDreams  ZayanteCreek Solutions
Explore geometry, color, symmetry, and design by creating mosaics, tessellations, mandalas, and other designs. View galleries and submit your own TileDreams designs; read the user manual and software reviews; and download a trial demo, or purchase a license
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 Tile.Net  ListUniverse.com
A comprehensive Internet reference site for finding discussion lists (mailing lists); Usenet newsgroups; FTP sites; computer products and vendors; and Internet and Web design companies. Search mailing lists by keyword (algebra, calculus, etc.) to find
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 Tiletris  Oktay Haracci
A tiling program for aperiodic or periodic tiling. Freeware, for PCs only, running Win 9x/2000. Help, including instructions, available on the site.
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 Tiling: A Java Program for Exploring Plane Tilings  Tom White
A Java application for experimenting with tilings and tessellations through scripting. Construct tilings interactively using a mouse  "like doing a jigsaw." Alhambra comes with many tile shapes already supplied; the site offers images created from the
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 Tiling and Packing results  Torsten Sillke
Packing problems, mostly, in English, with some in German. Packing Polycubes and Polyspheres; Tilings with Matching Conditions; links.
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 Tiling Plane and Fancy  Steve Edwards
The 17 wallpaper groups identify the plane symmetry groups and link to background patterns illustrating them. Tiling Definitions define, with examples, the terms fundamental region, isohedral tiling (isohedral and nonisohedral), isogonal tiling, lattice,
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 Tilings and Geometric Ornament  Kaplan, Salesin
A project designed to explore the intersection between computer graphics, geometry, and ornamental design. Papers and illustrations on Escherization, Islamic Star Patterns, Parquet Deformations, Symmetrohedra, and Voronoi Diagrams.
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 Tilings (Graphics Archive, Special Topics)  The Geometry Center
Regular subdivisions of the plane or space.
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 Tilings (The Geometry Junkyard)  David Eppstein, Theory Group, ICS, UC Irvine
An extensive annotated list of links to material on tilings. One way to define a tiling is a partition of an infinite space (usually Euclidean) into pieces having a finite number of distinct shapes. Tilings can be divided into two types, periodic and
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 Tiling with Polyominoes  Ivars Peterson (MathTrek)
"Mathematicians have proved that the general question of whether it's possible to cover the plane with identical copies of a given finite set of tiles is, in principle, computationally undecidable. In other words, there's no cookbook recipe or handbook
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 TiltAWhirl Chaos  Ivars Peterson (MathTrek)
The amusement park TiltAWhirl spins its passengers in one direction, then another... A rider never knows exactly what to expect next. Yet these complicated, surprising movements arise from a remarkably simple geometry. A passenger rides in one of seven
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 Tilton's Algebra  Ken Tilton
Guided, selfpaced algebra discovery in the Socratic style. Tilton's tutorials provide several sequences of whiteboard videos, demonstrations, hints, and feedback at each step of a student's work on a problem. Formerly known as Theory Y Algebra and Algebra
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 TI Math  Texas Instruments, Inc. (TI)
Activities (by subject and technology type), events, research, professional development, and resources, for the high school crowd and beyond.
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 Time4Learning  John Edelson, Founder
An online homebased learning system with multimedia lessons, interactive exercises, printable worksheets, assessments and quizzes for use in homeschool, tutoring, or summer programs. See, in particular, their Homeschool Math Curriculum. Sample lesson
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 TimeCritical Decision Making for Economics and Finance  Prof. Hossein Arsham; University of Baltimore
This site is intended to help students learn and manage the uncertainty by
using effective forecasting techniques.
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 Time Engineers  Ray Shingler, Clay Schultz, and David Bielat
In this video game, middle and high school students explore and apply fundamental principles of engineering by traveling in a time machine to build pyramids, irrigate farm land, steer a submarine, raise and lower medieval drawbridges, operate radar, launch
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 Time Engineers  Software Kids
A CDROM game of interactive, openended engineering problems to solve by using math and science skills, designed to help middle and high school students explore and apply some of the fundamental principles of engineering. Time Engineers encourages trialanderror
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 Time for Time  Darren Dalasta
For teaching the concept of time and how to tell time. Includes games, quizzes, and an interactive class clock for students; lesson plans and worksheets for teachers; history of telling time, U.S. time zones, world time zones.
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 Timelines and Scales of Measurement  Niel Brandt
TEX, DVI, PDF, Postscript, and ASCII files: Science / Technology History Timeline; Evolutionary / Geological Timeline; Cosmological Timeline; Scales of Measurement.
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 Time Math  Education 4 Kids, Inc.
Time, at different levels of complexity (clock and calendar). You are presented with two times (in one of the formats selected) and asked to determine the difference between the two.
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 Time: Minutes and Hours  NASA Lewis Learning Technologies Project
Roberta left for her dancing class at 3:45 p.m. Her dancing school is a 15 minute walk from her house, and her class lasted one and one half hours. What time did she get home if she went straight home? A detailed answer is provided. From NASA's 9th Grade
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 TimeMonsters.com
Learn and practice telling analog time on a clock face with Doctor Tempo, an animated talking head who reads aloud, provides oral explanations, and otherwise lends a voice as you work through lessons and quizzes on interpreting hour hands and minute hands.
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 The TIME Project (Technology in Math Education)  Harding University
At this website, middle level and secondary mathematics teachers can locate lesson plans, activities, and a list of websites that can serve as resources for mathematics teachers and learners.
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 Timesavers for Teachers  Stevan Krajnjan
Readytouse, oftenused forms, checklists, masters, timesaving ideas, reference materials, resources and other reproducible worksheets for classroom use. Purchase books for immediate download and printing.
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 Time [sci.astro] (Astronomy Frequently Asked Questions)  Joseph Lazio
sci.astro is a newsgroup devoted to the discussion of the science of astronomy. This document summarize answers to questions that appear fairly regularly: Time, Calendars, and Terrestrial Phenomena; When is 02/01/04? or is there a standard way of writing
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 Time Series Analysis and Forecasting; AUTOBOX  Automatic Forecasting Systems (AFS) Corporation
Autobox for Windows provides forecasting based on the BoxJenkins modelbuilding process, implemented for both ARIMA (univariate) modeling and Transfer Function (multivariate or regression) modeling. Features, prices, faqs, support, and mathematical information
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 Time (SMILE)  Gracie Davenport, Spalding School
A lesson designed to teach physically Handicapped (EMH) students to tell time using a number chart; to demonstrate their ability to tell time by using a clock; and to use this skill to follow a daily schedule. From the Practical and Applied Math section
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 Timestable
Practise the multiplication tables online; you choose which numbers you work with.
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 Times Table Rhymes  Benita BuchholzSchafer
Times table rhyme stories offer fun reading practice along with one hundred large colorful pictures. For elementary/primary school age. On CD.
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 Times Tables and Addition The Fun Way  City Creek Press, Inc.
A picture method of learning math facts, associating them with cartoons and stories and combining literature with math to reach all learning styles and increase retention of facts. Parents who want to help build selfesteem and increase math scores can
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 Times Tables Rap  Abbey World Media, Inc.
Learn to multiply with multiplication rap songs. Sample the songs before buying them. The site also provides free printerfriendly times tables.
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 Times Table Triangle  Brenda Batten, White Birch Educational Tools
An interactive, visual math manipulative that helps students memorize multiplication tables. The student inserts a pencil through the hole that corresponds with a multiplier, then turns the Triangle over to find the answer.
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 Times Tales  Trigger Memory Systems
Memorization system for the upper multiplication facts (6, 7, 8, 9 times tables). Uses visual mnemonics.
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 Times to Remember  Clockstone
With this multisensory method of memorizing multiplication facts, learners say, sing or rap the illustrated rhymes, then trace, color, and review the accompanying activity sheets. Published by Joyful Learning Publications, LLC.
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 Time Table Rhyme  Jane Hague
Help teach children the multiplication times tables using visual and auditory memory techniques. Equations include colorful illustrations and simple rhymes to create a picture in the child's imagination, enabling quick learning and random recall. Includes
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 Time, The Fourth Dimension  Jim Loy
Because of Einstein, we often call time the fourth dimension. Special relativity shows that time behaves surprisingly like the three spatial dimensions... Pretend, for a moment, that there are more than three spatial dimensions. What is a four or fivedimensional
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 Time to Set the Hook  John Stevens
A site dedicated to helping other teachers "set the hook with technology. It might be a video that demonstrates your standard being applied in a real life setting. It might be a screencast of a stepbystep solution to a problem. It might be a blog that
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 Timez Attack  Big Brainz
An actionfilled educational video game that teaches multiplication facts using graphics, sound, and animation comparable to mainstream games. Download the base version free; demo the licensed version; take a video tour; read reviews and testimonials.
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 Time Zonese  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about time zones, how they work, and why the former USSR have 11 time zones, while China has only one.
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 TI Middle Grades  Texas Instruments, Inc. (TI)
Online resources specifically for middle grades educators. Includes: classroomready math for your lesson plans; professional development and TI technology training opportunities; and tutorials for the TI73 Explorer and TI84 Plus family of graphing
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 Timothy Kasper
Screencast geometry lessons, most less than five minutes long, narrated by a seventh grade teacher in Indiana.
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 Tim's Interactive Puzzle Solution Center  Alex Sakharov
A growing collection of interactive online logic puzzles including Cannibals and Missionaries, Eight Queens, Gunport, and math puzzles of various difficulty levels.
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 TIMSS Brochure  Math Forum
Basic information about the Third International Mathematics and Science Study (TIMSS).
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 TIMSS Math and Science Challenge: Sample Test  EdInformatics.com
Several sample TIMSS Math Tests using original questions from the three released sets (Pop1,2,3). Tests are graded online and can be compared both to the international scores and to scores of other students who have taken the test online.
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 TIMSS Resource Center  Midcontinent Regional Educational Laboratory (McREL)
Articles, teleconferences, sites, and other materials about the Third International Mathematics and Science Study.
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