 ButlerCooley Excellence in Teaching Awards  Turnaround Management Association (TMA)
This program, made possible through the John William Butler Foundation, honors elementary and secondary grade teachers who have demonstrated exceptional dedication and skill in shaping the lives of students and the communities in which they live. It awards
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 The Butterfly Website Picture Galleries  Mikula Web Solutions, Inc.
Symmetry in nature: butterfly and moth images from a variety of sources. In most cases, a small picture is included for speed of transmission, and a larger picture is available by clicking on the small picture.
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 By the Numbers  Kinder Magic Software
Practice basic consumer math skills with Java applets that pace you though arithmetic problems, step by step: addition or subtraction of whole numbers or of decimals, percent markup, multiplication by one and twodigit numbers, multiplying decimals,
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 Cable's Leaders in Learning Awards
Cable's Leaders in Learning Awards recognizes outstanding educators, administrators, policymakers, and other community leaders at the forefront of innovation in education. Award categories include: Cable Partnerships for Learning, Pushing the Envelope
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 CADRE
A network for researchers improving science, technology, engineering, and mathematics (STEM) education in, and outside of, schools through inperson meetings, a web site, common interest groups, newsletters, and more. See, in particular, the Project Smart
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 Calculate the Distance Between Two Places  infoplease.com
How far is it from one place in the U.S. to another? As you type, this form automatically completes the names of populated places, schools, "locales," parks, islands, bars, lakes, reservoirs, bays, gaps, dams, glaciers, streams, wells, mines, bends, valleys,
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 CalculateWhat  Colin Fagras
Free online calculators. In addition to covering math topics such as algebra, geometry, and statistics, CalculateWhat crunches numbers on topics financial, scientific, and  under a category called "miscellaneous"  more whimsical and topical in nature.
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 CalculationRankings  Youri Lieberton
Arithmetic problems to solve or number sequences to complete as a stopwatch counts down. Play the games to compare high scores against other speedy problem solvers; take the timed tests to see correct answers after submission.
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 A Calculator
JavaScript calculators: the four basic operations, average, arithmetic congruence, greatest common divisor (GCD), least common multiple (LCM), radical simplifier, word converter that writes out numerals, and more.
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 calculator.com  Athera Corporation
Free access to online calculators to help you solve problems and answer questions in the home, office, and school. There are calculators for finance, business, and science, cooking, hobbies, and health. Some solve problems, some satisfy curiosity, and
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 A Calculator  Eric Fuller
This JavaScript calculator supports the four basic arithmetic operations, and features simple memory, square root, and percent functions.
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 Calculators OnLine Center  Martindale's Reference Desk
Online software and Java applets that calculate quantities for a number of general and specific uses. Numerous "calculators" available for Code Translators, Distance/How Far is it?, Finance, Taxes, Grade Point Average, Logic & Syllogism, Navigation/GPS,
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 The Calendar and the Days of the Week  Math Forum, Ask Dr. Math FAQ
What years are leap years? What day of the week will it be a year from today? How do I find the day of the week for any date? How do I find a calendar for any year? How common are Friday the 13ths?
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 The California Learning Resource Network  California Department of Education
An educator's guide to instructional technology resources that support California's curriculum frameworks and standards: if an instructional program marketed to schools uses a computer, a VCR or laserdisc player, a network or the Internet or any combination
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 California Mathematics Council (CMC)
A professional organization of educators dedicated to improving classroom instruction in mathematics at all levels. Goals: to foster excellence in school mathematics curricula and instructional programs, including assessment and evaluation; to promote
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 California Online Mathematics Education Times (COMET)  Carol Fry Bohlin
A weekly news journal designed for mathematics educators and educational leaders, COMET features information on current educational issues, web resources, professional events and opportunities, and news articles from California and across the nation.
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 CalmPlex: 3D Geometric Wooden Puzzles  R&A Media Inc. and Andy Snowie
A manufacturer of wood puzzles based on simple geometric shapes. Learn about the CalmPlex wooden puzzle, a twelve piece, mechanical puttogether manipulative that makes an 8x8 checkerboard, a 4x4x4 cube and over 50 other tessellated shapes: details, solution
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 Camel and Bananas  Math Forum, a Classic Problem from the Ask Dr. Math FAQ
What's the maximum number of bananas the camel can transport across the desert?
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 CAMI Educational Software
Creators of interactive educational software emphasizing learner efficiency, reinforcement, and flexibility; and offering diagnosis, practice, and remediation: "The CAMI methodology focuses on knowledge retention as opposed to knowledge transfer....,
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 CAMI Software
International software company, makers of math drill and practice programs. Covers subjects from preschool to early college levels. Company based in South Africa with offices in Australia, Finland, and the United Kingdom.
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 Canadian Mathematics Education Study Group  David A. Reid, Acadia University
CMESG is a group of mathematicians and mathematics educators who discuss mathematics education issues at all levels of learning. The aims of the Study Group include studying the theories and practices of the teaching of mathematics, and exchanging ideas
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 Canberra Mathematical Association (CMA)  Faculty of Education, University of Canberra
A professional body with the following aims: to act as a lobby for mathematics educators in the ACT; to help keep teachers up to date; to encourage teachers to be lifelong learners; to network teachers across schools and sectors; to foster the love of
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 CapJaxMathFax  Jack Fretwell, Starboard Training Systems
Commercial software for drilling math facts. Defines "knowing" a math fact as getting it on the first try within 3 seconds. Presentation software with a patented rating system turns learners' efforts into a challenging game with 400+ math facts. Includes
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 Career Profiles 
AMSMAASIAM Mathematical Sciences Career Information Project
Mathematicians at work: practical answers to the question, Why should I study math? More than 40 short essays written by math majors around the country about the types of work they are doing after having received their undergraduate or graduate degrees.
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 Carol Hurst's Children's Literature Site  Hurst, Otis
A collection of reviews of books for kids, ideas of ways to use them in the classroom, and collections of books and activities about particular subjects, curriculum areas, themes and professional topics. Ideas for teachers, librarians, home schoolers
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 CarQuiz  Smile More Studios
Tablet game app for practicing basic operations. Designed by a fatherdaughter team, CarQuiz presents 30 arithmetic problems over the course of three race laps. Steer the game car by swiping left or right to drive under the lane corresponding to the correct
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 Carré d'As  Carré d'As
Mathématiques amusantes pour vous détendre: questions et solutions, challenges, la question des champions (qui sera remplacée quand 20 internautes auront réussi à trouver la solution avec une démonstration correcte dès le premier essai), et 229 questions
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 CarrotSticks Online Math Games  CarrotSticks
This online multiplayer game lets kids practice the four basic operations of addition, subtractions, multiplication, and division  or compete with classrooms and other peers around the world, headtohead, in real time.
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 Cascade Math Systems  Cascade Math Systems LLC
Narrated screencasts of a multisensory approach to reviewing or refreshing understanding of patterns, whole numbers, fractions, integers, and more. See also Cascade Math's YouTube channel.
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 Casio Education  Casio America, Inc.
Calculators, technology, lesson library, activities and sample questions, and other calculator resources for grades K through college. See also Casio's news and events, testimonials, and customer
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 CataList: Catalog of LISTSERV Lists  LSoft international, Inc.
From this page you can browse any of the approximately 30,000 public LISTSERV lists on the Internet, search for mailing lists of interest, and get information about LISTSERV host sites. This information is generated automatically from LISTSERV's LISTS
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 CCSSI Mathematics
This blog takes "a critical look at the common core state standards in mathematics." Posts, which date back to April, 2012, have included "The concept of none" and "Does a kindergartner need to know what a hexagon is?"
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 CEISMC (Center for Education Integrating Science, Mathematics and Computing)  Georgia Institute of Technology
CEISMC includes the Virtual Institute, which introduces teachers to technology, connects them to the Internet, encourages collaboration, and provides training and resources; and other programs for students and teachers covering: mentoring; career awareness;
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 Center for Advancement of Learning: Learning Strategies Database  Muskingum College, New Concord, Ohio
Database of background information, purposes and advantages of various strategies, and descriptions of specific strategies themselves. Subjectspecific strategies, including math, and a variety of general purpose strategies are available.
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 Center for Applied Special Technology (CAST)
An educational, notforprofit organization that uses technology to expand opportunities for all people, including those with disabilities. CAST conducts applied research in universal design; develops and releases products that expand opportunities for
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 Center for Cognitive Technology  Richard E. Clark, Director
Conducting and analyzing interdisciplinary research on the role of new technology in the development of advanced expertise and performance motivation. See, in particular, the publications "Teaching general problemsolving skills is not a substitute for,
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 Center for Earth and Planetary Studies (CEPS)  National Air and Space Museum, Smithsonian Institution
CEPS performs original scientific research and outreach activities on topics covering planetary science, terrestrial geophysics, and the remote sensing of environmental change. The Center has curatorial responsibility for two galleries in the National
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 Center for Education and Equity in Mathematics, Science, & Technology (CEEMaST)  California State Polytechnic University at Pomona
A collaborative effort of the College of Science and the School of Education. Searchable site provides information on new projects, workshops and conferences, personnel, email contacts, grant projects, places to go, software archives, AMTE, the California
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 Center for Excellence and Equity in Education  Rice University
CEEE seeks to promote greater participation of underrepresented groups in the sciences, and to encourage academic excellence for all. It hosts national conferences, publishes K12 curriculum items and diversity materials, and runs a number of projects
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 The Center for Game Science
Makers of free online fraction games such as Treefrog Treasure, Refraction, and Creature Capture. The Center for Game Science also offers its research publications on science, technology, engineering, and math (STEM) games for scientific discovery; for
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 Center for Improved Engineering and Science Education (CIESE)  Stevens Institute for Technology
CIESE's mission is to catalyze and support excellence in teaching and learning of science, technology, engineering, mathematics (STEM) and other core subjects through innovative, researchbased instructional strategies and use of novel technologies. CIESE
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 Center for Improving Learning of Fractions  University of Delaware School of Education
A research and development center aimed at understanding difficulties students have with fractions. Center publications include "Improving AtRisk Learners' Understanding of Fractions," published in the Journal of Educational Psychology; "Developmental
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 The Center for Innovation in Education
Cofounded in 1975 by two classroom teachers, Mary and Bob BarattaLorton, the Center for Innovation in Education provides mathematics inservice and training. Workshops offered include Math a Way of Thinking and Math Their Way, a summary newsletter and
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 Center for Innovative Learning Technologies (CILT)
Joining forces and leveraging resources to improve K14 education. Four theme areas have been defined as initial opportunities, with a "theme team" for each. Teams meet annually with the best minds in their fields from Industry, Research, and Schools
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 Center for Inquiry Based Learning  University of Michigan
Promoting "the teaching and development of inquirybased learning in mathematics." See, in particular, the Center's descriptions of undergraduate math and math education courses.
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 Center for Mathematical Talent  New York University
The Center for Mathematical Talent (CMT) at the Courant Institute of Mathematical Sciences coordinates activities for students in the New York City area who would like more mathematics than is included in the usual mathematics classroom. Freely downloadable
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 The Center for Talented Youth (CTY)  The Johns Hopkins University
A universitybased initiative that promotes the academic experience of children with "extraordinary mathematical ability" worldwide. Links include opportunities for homeschoolers, summer and academic year educational opportunities, distance learning,
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 Center for Technology and Teacher Education  Curry School of Education, University of Virginia
An interdisciplinary group that develops materials to prepare teachers to use technology to enhance and extend students' learning of mathematics. This site offers activities using graphing calculators, The Geometer's Sketchpad, Microsoft Excel, the ExploreMath.com
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 Center for the Development of Teaching (CDT)  Education Development Center, Inc. (EDC)
A research and development center whose goal is to learn how teachers' practice can be transformed to support students' construction of knowledge. Currently focusing on mathematics and science teaching, the Center carries out research and action projects
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 Center of Excellence for Science and Mathematics Education (CESME)  University of Tennessee, Martin, Tennessee
A site designed to serve as a starting point for teachers who are looking for resources to improve their science or mathematics teaching. CESME Resources and Projects include Mathematics Activities Guides (PDF format) and the Tennessee Mathematics K8
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