 Blind Childrens Center
A nonprofit organization based in Los Angeles, CA (U.S.) available to blind and partially sighted children regardless of race, color, national or ethnic origin, sex, religion or ability to pay. Links to programs for infants and preschoolers; family
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 Block Schedules and Student Performance on AP Examinations  Robert Smith and Wayne J. Camara  collegeboard.com, Inc.
Download a PDF article that concludes that "[t]he instructional schedule does affect student grades on the four AP Examinations in this 1998 study after they have been adjusted for group differences in student ability. The results from this study generally
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 Block Scheduling Archive  Teacher Education Center, Academy One
A professional development discussion: several math teachers share their experiences with block scheduling.
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 Block Scheduling  Center for Applied Research and Educational Improvement (CAREI)
CAREI, part of the College of Education & Human Development of the Univ. of Minnesota, offers information for educators and administrators currently using the block system, as well as for schools considering switching from a schedule having 6, 7 or
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 Block Scheduling Effects on a State Mandated Test of Basic Skills  Veal, Schreiber; Education Policy Analysis Archives
A study that examined the effects of a trischedule on the academic achievement of students in a high school. The trischedule consisted of a traditional, 4x4 block, and hybrid schedules running at the same time in the same high school. The effectiveness
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 Block Scheduling Resources  Cleveland HeightsUniversity Heights School District
A collection of reports and discussions about block scheduling, and links to schools that use it.
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 Block Scheduling: Structuring Time To Achieve National Standards in Mathematics and Science  Bernard Durkin
The national standards for science and mathematics education call for sufficient instructional time for inquiryoriented activities, accompanying discussion, and explanations of concepts involved. Several of the standards will require increased time to
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 Blogic  J. David Velleman, Dept. of Philosophy, Univ. of Michigan
An interactive textbook in logic. Topics and interactive software include: Boolean searching; logic circuits; truthtables; Turing machines; foundations of probability; modal logic with possibleworlds diagrams; quantification. Includes interactive
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 Blog of a Math Teacher
A newly minted math teacher reflects on going back to school, the first day of practice teaching, state certification, job hunting, the interview, and more. With archives dating back to July, 2003.
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 Blog of Science  Pierre Far
A blog started in December, 2005, by a bacterial geneticist to "write about the latest scientific discoveries, explaining them in terms everyone can understand." Far favors topics that "affect people," so blogsci.com tends to feature health and medicine
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 Blog on math blogs  American Mathematical Society
A blog by "two mathematicians touring the mathematical blogosphere." Posts, which date back to April, 2013, have included "Binary Bonsai and Other Mathematical 'Plants,'" "Building the World Digital Mathematical Library," "On Pregnancy and Probability,"
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 Blog on the history of Fermat's Last Theorem and Wiles' Proof  Larry Freeman
The purpose of this blog is survey the developments of number theory in relation to Fermat's Last Theorem. I try to focus on the people, ideas, and mathematical details. It is meant to be interesting, accessible, and accurate in its mathematical details.
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 BLOSSOMS  Massachusetts Institute of Technology Learning International Networks Consortium (MIT LINC)
Video modules that enliven existing curricula with clips and support materials for inclass teachers to intersperse in active, goaloriented exercises. Each module includes a teacher's guide, downloadable handouts, and a list of additional resources;
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 Blue Sky Research (TeX, LaTeX, AMSTeX)
An online catalog with TeX, LaTeX, and AMSTeX manuals available by mail order. Also Textures, its requirements, and interfaces. Fonts, news, price list and ordering information, technical support. The FTP server has materials for TeXperts and novices,
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 Blue Web'n Learning Sites Library
Learning Applications: a library of Internetbased instruction. Search for applications by grade level, application type, content area, Dewey number, and/or keyword. A Content Table shows the number of entries for each content area and application type
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 A = B  Marko Petkovsek, Herbert Wilf, Doron Zeilberger
A=B, by Petkovsek, Wilf, Zeilberger, is a book about identities, especially identities involving binomial sums and hypergeometric identities, and ways to prove them using computer programs. The entire text may be downloaded from this site in PDF format.
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 BNALib, A Visual Basic Numerical Analysis Library for Personal Computers
 C. David Eagle, Jr.
The BNALib software package, provided in source code form, is a toolbox of subroutines, functions, and demonstration programs that provide numerical analysis computing capability for Visual Basic programmers. Each numerical method is a digital computer
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 Boaz Tsaban's Homepage
Includes three PostScript papers: Was Godel right? Was Pi known to ancient Rabbis? and On the Rabbinical Approximation of Pi. Also a links to a Jewish Mathematics page.
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 Bob's Pages  Bob Allanson
A collection of geometry applets. Generate and modify polyhedra, investigate the Mandelbrot and Julia sets, or experiment with Pappus's arbelos, the porisms of Poncelet and Steiner, and a logarithmic spiral.
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 Body Surface Area Calculator  Evelio PerezAlbuerne
Calculate the surface area of your body (in square meters) from height and mass.
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 Boil, Boil, Toil and Trouble: The International Boiling Point Project  Center for Improved Engineering and Science Education (CIESE)
People from all over the world boil water at different elevations and post data to discover which factor in the experiment (room temperature, elevation, volume of water, or heating device) has the greatest influence on boiling point. Anyone can boil water,
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 The Boise Problem Book  Marion Scheepers; Dept. of Mathematics, Boise State University, Boise, ID
Combinatorial games and set theory. Chapters include: Covering games and Memory; Peculiar sets of real numbers and games; Gdelta properties and games; The precipitous ideal game; Cardinal numbers related to the real line; Embedding problems; Gaps; The
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 bontegames  Bart Bonte
Logic and physics Flash challenges from the independent game designer behind "factory balls" and "sugar, sugar": a blocky christmas, furiosity, 40xEscape, farafalla, 14 locks, and more.
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 Bookfill Publications  C. J. Davis
Algebra and geometry workbooks formatted to facilitate writing all answers directly onto the book. These books, for Year 10 and Year 11 students who require GCSE maths revision, cover general Foundation and Higher level topics.
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 Book of Odds  Book of Odds, Inc.
A dictionary "filled not with words, but with numbers – the odds of everyday life." The Book of Odds "contains hundreds of thousands of Odds Statements, from the odds of being the only one to survive a plane crash, to the odds of having a heart attack,
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 Books and other nonweb resources (History of Mathematics)  David Joyce; Dept. of Mathematics & Computer Science, Clark University
Organizations devoted to the history of Mathematics; a Bibliography of source books; Journals; Bibliographies and catalogues; and Texts on the history of mathematics.
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 Books By Alma.com  Alma Longsworth
Math books for use in the classroom or at home.
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 Books by Lillian Lieber  Lillian Lieber, Hugh Gray Lieber, Paul Dry Books
Paul Dry Books has republished three of Lillian Lieber's books on mathematics: The Education of T.C. MITS: What Modern Mathematics Means to You, Infinity: Beyond the Beyond the Beyond, and Einstein's Theory of Relativity. Lillian Lieber was the head of
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 Books: Professional & Technical: Education  Amazon.com
Browse bestselling books about education from the Professional and Technical Bookstore at Amazon.com, in categories such as General; Biographies of Educators; Counseling; Education Theory; Lesson Planning; Preschool & Kindergarten; Reference; Special
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 Books: Professional & Technical: Professional Science: Mathematics  Amazon.com
Browse bestselling math books from the Professional and Technical Bookstore at Amazon.com, in such categories as Applied; Chaos & Systems; Geometry & Topology; Mathematical Analysis; Mathematical Physics; Number Systems; Pure Mathematics; Transformations;
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 Books that Compliment the Classroom  MaryEllen Musacchia, Little Red Hen Press
The Jelly Bean Parade is a story for children in PreK3 about how jelly beans are made. The author writes, "The information presented keeps little ones interested and active in the story. After a read aloud, students can actively engage in: color identification,
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 Boolean Algebra (Encarta Encyclopedia 2008)  Microsoft Encarta Online
Boolean Algebra, branch of mathematics having laws and properties similar to, but different from, those of ordinary high school algebra. Formally a Boolean algebra is a mathematical system consisting of a set of elements, which may be called B, together
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 Boolify  The Public Learning Media Laboratory
Visualize the process of searching the web by interacting with the abstract logic concept behind queries  as jigsaw puzzle pieces of keywords and Boolean operators (AND, OR, NOT). Boolify offers a video and several lesson plans in a web search curricula.
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 Boomerang (SMILE)  Wilhelm L. Lilly, Kenwood Academy High School
A lesson for grades 412 designed to teach students to estimate angles in degrees and distances in feet or meters; collect data and analyze a histogram; and (optionally) study gyroscopic precession and aerodynamics. From the Recreational and Creative
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 Boost Your Skills With ATI Courses!  Applied Technology Institute (ATI)
A center for technical training in the form of short courses and distance learning
in space, communications, defense, sonar, radar, and signal processing.
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 Border Pattern Gallery  John Wolfe; Geometric Structures Class, Oklahoma State University
A gallery developed as a class project: creating and classifying border patterns (also called frieze or band patterns) provides an engaging introduction to symmetry for students of all ages. Examples and explanations for seven different border types.
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 Borrowing/Regrouping  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about borrowing, regrouping, and carrying, such as "When doing subtraction problems like 10099, why do the zeros become nines?" and "When you are subtracting a fraction, do you always take one away from the whole number?"
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 Bottles in a Wine Rack  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Arranging wine bottles in a rack leads, under certain circumstances, to a curious mathematical problem discussed in books by S. Wagon and R. Honsberger. The site arouse out of an attempt to illustrate their solution. The dynamic illustration quickly
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 Bounded Set Theory  Vladimir Sazonov
Bounded Set Theory (BST) is a weak version of the ordinary set theory. Its main feature is paying main attention to using bounded quantification (as in the ordinary everyday mathematical practice) and other analogous bounded constructs. The language of
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 Bowland Maths  Bowland Charitable Trust
Case study problems and lessons designed to develop thinking, reasoning and problem solving skills in UK math pupils ages 1114. In particular, download series of standalone assessment items that challenge students to estimate the number of descendants
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 Bowman in Arabia  Bowman Dickson
Blog by a teacher of calculus and AP Calculus at King's Academy (Jordan) who "believes in optimism and enthusiasm above all else." Posts, which date back to August, 2009, have included "Maybe I'm starting to become more Jordanian"; "But my son told me
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 Boxes and Bags  Aunt Annie's Crafts
Five projects that are fun to make and teach some basics of geometry: Snowflakes, Geometric Solids, and More Geometric Solids work well in gift wrapping; Flexagons and Tangrams make nice gifts. All of the projects can also be incorporated into lesson
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 Boxplots in Excel  Neville Hunt, Coventry University
A method for using Microsoft Excel to create boxplots, or box and whisker diagrams, which provide a simple graphical summary of a set of data. Boxplots show a measures of central location (the median), two measures of dispersion (the range and interquartile
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 Boy or Girl?  Math Forum, a Classic Problem from the Ask Dr. Math FAQ
In a twochild family, one child is a boy. What is the probability that the other child is a girl? What if the older child is a boy?
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 Boy's Surface (Student Sculpture)  Pau Atela, Smith College
A mathematical sculpture constructed by students at Smith College for an undergraduate course in the spring 2000 semester. The students worked with formulas and computer calculations to construct and weld a 6'7" x 6'7" metal sculpture reproducing Boy’s
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 The Brachistochrone  Paul Kunkel
An investigation of the problem: We are given two fixed points in a vertical plane. A particle starts from rest at one of the points and travels to the other under its own weight. Find the path that the particle must follow in order to reach its destination
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 The brachistochrone problem
 MacTutor Math History Archives
Linked essay on the brachistochrone problem, posed by Johann Bernoulli in Acta Eruditorum in June, 1696. With references and other related web sites.
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 Brahmagupta's Formula  Jim Wilson, Dept. of Mathematics Education, Univ. of Georgia
Problem: Develop a proof for Brahmagupta's Formula, which provides the area A of a cyclic quadrilateral (i.e., a simple quadrilateral inscribed in a circle) with sides of length a, b, c, and d as A = sqrt((sa)(sb)(sc)(sd)) where s is the semiperimeter
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 BrainBashers  Kevin N. Stone
A collection of logic, language and math puzzles, in a choice of easy/medium/hard. Rate the puzzles; show their answers. Logic puzzles include Einstein's Puzzle. Play games of strategy, such as "Four in a Row" (also known as "Connect Four") or games based
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 BrainBashers  Kevin Stone
Five math or logic challenges on a page, each with clickable hints and solutions. For games, visit http://www.brainbashersgames.com/.
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