 Roles of calculators in the classroom  Pedro Gómez and Bert Waits
The site contains the extended papers of the conferences presented in the Topic Group 18 of the International Congress of Mathematics Education held in Seville in July, 1996. Papers are presented both as web pages and as PDF files.
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 The Roles of Interest and Mathematical Beliefs in Preservice Teachers' Learning to Mentor Online [PDF]  Ray & Renninger
Paper presented as part of a symposium, American Educational Research Association, Chicago, IL. A study of preservice teachers working with the Math Forum's Online Mentoring Guide.
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 Rolling and Learning® with trisquare dice  Creative Enterprises, Inc.
A book describing math games to be played with 14sided dice, suitable for grades K6 or 8. Order form available on the web.
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 Roman Numeral Conversion  InnoVision Technologies
Enter the Arabic number you want to convert to Roman, as long as it's less than 4000.
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 Roman Numerals 101  Oliver Lawrence
The Romans used only seven letters; the combination of a letter and its position could represent any number. They also used a line above the letter, so the numbering system actually represents our own very closely, with fourteen different symbols. The
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 Roman Numerals and Dates  Paul Lewis
An illustrated introduction to Roman numerals, including Roman dates and calendar conversion, history and uses, a page on The Great 1999 Question, and a quiz. Three conversion tables are provided: Numerical 11449; Numerical 14502100; and Alphabetical
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 Roman Numerals  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about Roman numerals, such as how they represented decimals and fractions; with memory aids for remembering what letter represents what value.
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 Roman Numerals  Math Forum, Ask Dr. Math FAQ
Basics: How do I read and write Roman numerals? What are the rules for subtracting letters? How do I write large numbers? Web resources: introductions, charts, calculators, and converters. Calculations: Did the Romans use fractions?
How can I use Roman
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 RomanNumerals.org  John Barth
Lessons, worksheets, online games, and quizzes for practicing Roman numeral counting and arithmetic.
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 Room 108 Math  John Rickey
Online math practice for young children: addition, subtraction, multiplication, division; solving combinations of coins; putting numbers in order; counting to 1000, and more.
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 Room 8 Geometry Book  Ms. Woods' First Grade
Shape drawings by firstgraders: Prelude; Shapes  Triangles, Circles, Ovals, Squares, Rectangles, Diamonds, Pentagons, Hexagons, Octagons, Other Shapes; Forms  Cubes, Rectangular Prisms, Pyramids, Spheres, Cylinders, Cones; Concepts  Corners, Angles,
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 Rosebush Math Line Puzzles  Math Forum
Three puzzles: 1) plant 7 rosebushes so that they form 6 straight lines with 3 rosebushes in each line. 2) plant 10 rosebushes in 5 straight lines with 4 bushes in each line. 3) plant 19 rosebushes in 9 straight lines with 5 bushes in each line. Questions,
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 Rounding a Decimal  NASA Lewis Learning Technologies Project
Round 12.5861 to the nearest hundredth. A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Rounding Numbers  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about rounding whole numbers. decimals, and fractions.
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 Rounding Numbers  Math Forum, Ask Dr. Math FAQ
How do you round a number to the nearest tenth (10th), hundredth (100th), thousandth (1000th), etc.?
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 Rounding Seconds  NASA Lewis Learning Technologies Project
Erv ran the 110 meter high hurdles in 13.27 seconds. His teammate, Willie, ran the same race in 12.91 seconds. Rounded to the nearest tenth of a second, how much faster was Willie's time? A detailed answer is provided. From NASA's 9th Grade Math Proficiency
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 Route ICS (formerly DeweyWeb): Interactive Communications and Simulations  Univ. of Michigan
An effort to link distant schools and expand the classroom experience: using telecommunications and computer conferencing, students can spend part of every school day in a "global classroom." Crossroads: The Route 12 Project is a grassroots attempt to
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 Roxanne Eckenrode's Storefront  Lulu.com  Free SelfPublishing  Roxanne Eckenrode
Selfpublished math worksheets. Several are free. They are downloadable and printable; correct answers will spell out a message or fill in a puzzle.
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 Royal Tyrrell Museum of Palaeontology
Virtual site for a science museum named for Joseph Tyrrell, who in 1884 travelled to what is now Alberta, Canada to study coal deposits and found the first dinosaur remains ("Albertosaurus") in the Drumheller area. The museum's mandate is to collect,
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 RU4Math
Games and events for elementaryaged students from Pulaski and Montgomery counties, and Radford City schools, who participated in the RU4Math Fest of March 22, 2003, held at Radford University. Shockwave games about logic and simple equations, currency
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 Russian Peasant Multiplication  Math Forum, Ask Dr. Math FAQ
What is Russian peasant multiplication? How do I use it? Why does it work? How is the Russian peasant algorithm connected to binary numbers?
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 Russian School of Mathematics
An afterschool math enrichment program "based on the best practices of advanced math schools in Russia and Europe and adapted to the US educational environment." Cofounded in 1997 by Inessa Rifkin and Irina Khavinson — who recall that, in the
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 SABES: System for Adult Basic Education Support  Massachusetts Department of Elementary & Secondary Education
SABES promotes high quality adult basic education services through training, support, and resources that improve the skills and knowledge of practitioners and strengthen programs. SABES strives to achieve this mission by: providing staff development that
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 Sacramento Area Math Help and Tutoring  Just Math Learning Centers
Just Math provides math help, tutoring and SAT prep for Sacramento area children through college students. Skills training in elementary math, algebra, geometry, and calculus.
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 Sacred Geometry  Bruce Rawles
"In nature, we find patterns, designs and structures from the most minuscule particles, to expressions of life discernible by human eyes, to the greater cosmos. These inevitably follow geometrical archetypes, which reveal to us the nature of each form
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 SadlierOxford  William H. Sadlier, Inc.
From the publishers of the textbooks Progress in Mathematics and Math Alive at Home in Spanish, activities and vocabulary, a primary glossary, and an intermediate glossary.
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 SafeT Compass  Maddy, Maverick; James Garner
A compass with no sharp points, flat enough to use as a bookmark in a high school geometry or algebra text and safe enough for a child. Draw circles from 1/4 in. to 10 in. in diameter with this new flat compass. $2 each, 2 for $3 postpaid. See also their
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 SAM Learning  SAM Learning Ltd.
U.K. exam revision (review) for A Levels (age 1618), GCSEs (age 1416) and SATs (KS3, age 1114; KS2, age 711; KS1, age 57). Draganddrop exercises and online tests of math knowledge.
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 Satlink  Missouri School Boards Association (MSBA)
A monthly national magazine that serves as a guide to educational satellite teleconferences and programs concerning most K12 subjects, including many math areas. These programs can be a source for new information or an additional resource for current
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 Saxon Publishers, Inc.  Harcourt Achieve
Saxon publishes educational textbooks and other teaching materials for the primary and secondary education markets (Grades K12) as well as for the home study market. The Saxon method of teaching math stresses "fundamentals." Site includes lists of inservices,
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 Scale Drawing Project  Diane Coates
A lesson plan: Choose a picture like a cartoon or a greeting card, etc. It is best not to choose a photograph. Decide what scale factor will enlarge your original drawing to an appropriate size for a standard size poster board (i.e. 1:3, 1:4, 1:5, 2:7
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 The Scale of the Universe 2  Cary and Michael Huang
Use the scroll bar or computer mouse wheel to zoom in and out  from quantum foam to charm quarks to "smallest thing visible to an optical microscope" to the thickness of paper all the way up to Cruithne, the depth of the Mariana Trench, Minecraft World,
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 Scaling Up Innovative Practices in Mathematics and Science  Carpenter et al.
Download a PDF of a research report that clarifies the meaning of the phrase "learning with understanding," describes the nature of successful professional development, and outlines how to scale successful practices. The research by Thomas P. Carpenter,
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 Scenes from a Dynamic Math Classroom  Ihor Charischak
In a dynamic math classroom, "discourse between teacher and students produces engagement and learning." Posts, which date back to July, 2008, include ISTE 2011 Reflections  My presentation," "Crowdsourcing Jr. Classroom Activity," "Supermarkets marketing
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 Scholastic, Inc.
Information about Scholastic, Inc., a global children's publishing and media company in education and entertainment (curriculum, magazines, books, film, TV, and multimedia). Classroom activities and reproducibles (e.g., math) teacher talk, separate parents
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 Scholastic Online Activities  Math  Scholastic, Inc.
Lessons and activities for grades PreK3 or 48, with sources listed: Kids USA Survey; Max's Math Adventures of interactive whiteboardready rhyming math activities, audio support, and printables; Math Maven's Mysteries; I Spy Oops Hoops; Math Hunt; and
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 Schoolhouse Flash  Screenic Digital
Addition, subtraction, multiplication and division flash card sets online. Animated math fact equations in Level One for kids to count. Practice cards in Level Two reveal the answer upon a mouse click. Level Three offers a choice of 3 or 5 seconds to
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 Schoolhouse Rock
Schoolhouse Rock is one of many artifacts from the 1970s that still is in existence today. In the mid70s, ABC TV aired these short cartoons, which taught a generation about government, history, grammar, science, and math. The lyrics of all the songs
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 School Match  Public Priority Systems, Inc.
A school research and database service firm that specializes in rating schools (K12) using auditable data for the parent and corporation, including school rating for the parent, realtor, and homebuyer; school choice consultation; counseling services
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 School Science and Mathematics Association
The School Science and Mathematics Association (SSMA) is dedicated to improving instruction at all levels in and between science and mathematics by providing leadership in the field. Its primary work and publications address the needs of all of those
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 Schools Online (SOL)  Pacific Internet Pte. Ltd.
A Singaporebased searchable resource site dedicated to schools, educators, and students, its mission to provide schools with dedicated Internet access and services enabling schools to optimise the Internet for educational purposes. In addition to cocoordinating
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 SchoolTrainer.com  SchoolTrainer.com Ltd.
SchoolTrainer.com provides a wide range of academic coaching services including online tutoring for Math, Algebra, Geometry, Calculus, Trigonometry for all grades. Free homework help and online study materials are provided as well. Flexible rate plans.
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 School Wise Press
California publishers of school profiles for use in choosing schools for your children. The site also provides: educationoriented news, articles, and books; online school comparisons; an askanexpert service with a parent advocate; and editorial responses
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 School Wiz Tutoring  School Wiz
Australian computerbased maths & English tutoring with live support.
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 SchoolWorld Internet Education
A global Internet classroom from Australia for K12 students and teachers, designed to allow schools to participate in a wide range of varied programs and projects (see The Math Decathlon by teacher Mike McGee), to interact with other schools from around
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 Science and Mathematics Education: Similarities and Differences  Lynn Arthur Steen; St. Olaf College
Lynn Steen writes on the similarities and differences between the NCTM Standards and those of the National Research Council. Intellectually, the two communities agree on virtually all comparable aspects of their respective standards. But the nature of
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 Science and Math Initiatives (SAMI)
A database/clearinghouse of resources, funding, and curriculum for rural math and science teachers. List, search by title or description, or browse math resources by category. Originally a project of the Boulder Valley School District, Boulder, Colorado,
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 Science Animations  Peet van Schalkwyk
Science and Maths animations done in Macromedia Flash. These animations are free, interactive, 3D and dynamic.
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 Science Education at Jefferson Lab  Thomas Jefferson National Accelerator Facility (Jefferson Lab)
Educational resources for students (homework help links; programs and events; games and puzzles; internships) and teachers (summer programs; reference links; distance learning programs; activities, worksheets, and games). See, in particular, Jefferson
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 Science, Engineering, and Technology for Youth  eXtension
Lessons, news, articles, answers from experts, a glossary, and other science resources for young people. See especially Math in Child Care, which organizes suggestions for developing children's mathematical foundations into topics such as onetoone correspondence
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