 Biopolymer Calculator  Schepartz Lab
Calculate the molecular weight, the extinction coefficient, the concentration, and the melting temperature of a single stranded nucleic acid. Additionally, you can enter a protein sequence and calculate the molecular weight (using average isotopic mass),
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 BioTech: Life Sciences Resources and Reference Tools  Indiana University
A searchable site that assists in the location and use of biotechnology resources, including the biotechnology aspects of agriculture, medicine, veterinary science, and molecular biology/biochemistry (pure sciences). An illustrated Dictionary provides
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 The Birthday Problem  Math Forum, a Classic Problem from the Ask Dr. Math FAQ
What if somebody offered to bet that at least two people in your math class had the same birthday? Would you take the bet? How large must a class be to make the probability of finding two people with the same birthday at least 50%?
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 The Birthday Problem (MSTE)  George Reese; University of Illinois at UrbanaChampaign (UIUC)
This activity discusses the probability that there will be at least two matching birthdays in a small group of people. It includes an online program that creates a set of dates at random. Introduction, simulation, questions, an explanation, and a note
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 Birthday Surprises  Ivars Peterson (MathTrek)
It's rather unlikely that you and I share the same birthday (month and date). The more people you pull into the group, however, the more likely it is that at least two people will have matching dates. Ignoring the minor technicality of leap years, it's
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 BIT101 Lab  Keith Peters
Launch BIT101 Lab to browse Peters' repository of experimental Flash files, many interactive, dating back to 2001. He also provides tutorials on using Flash to simulate gravity, easing, elasticity, perspective, 3D rotation, and "the various little creatures
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 BitArt  Robert J. Krawczyk
Illustrated introductions to spirolaterals and strange attractors. See a selfrunning demonstration of a variety of spirolaterals, or generate one of your own and see all the reversals. The link of current exhibits lists installations showing strange
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 bitplayer  Brian Hayes
In Hayes' weblog, the author of the American Scientist Computing Science column elaborates on those articles, posts errata, records notes from conferences in progress, and explores other topics. The blog dates back to January, 2006, and includes articles
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 Bits and Bytes  Brian Metcalfe, Editor; Winnipeg School Division No. 1
A K12 education newsletter distributed throughout Winnipeg School Division No. 1 since October 1984. Its focus is to provide educators with tips and techniques to help them integrate technology to enhance learning in their classrooms. The site includes
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 BizMo Diaries  Kirby Urner
"On the road with global data." This open source developer's blog, which dates back to January, 2005, has included posts on math education, such as "Python for GIS Experts," "Memo to Gnu Math Teachers," "Playing with Blocks," "Story Problems," "Mathematics
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 B.J. Pinchbeck's Homework Helper  Bruce P. Pinchbeck and B.J. Pinchbeck
In 1996, when he was 10, B.J. (and his father) began compiling links to educational websites. The site has grown to conclude hundreds of sites that will help you with your homework, including a page of annotated sites for math and another for computer
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 Blackline Masters  Savetz Publishing, Inc.
Download free PDFs of black line masters for inch, polar, log, and semilog grids.
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 Black Saturn Mandelbrot Set Explorer  Kokoska
Very high, high, and low resolution Java applets for zooming in on smaller and smaller areas and discovering the hidden complexities of the Mandelbrot set.
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 Blended Animated Teaching and eLearning  Dr. Massoud Hajsadr
Description of the author's pedagogical experiments with elearning and online animations.
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 Blended Learning and Teaching with Animation  Dr S. M. Hajsadr
Algebra lessons online. Free registration required. From the site: Electronic lessons are animated learning material which deliver classroom or tutor like teachings. They are developed following the strict guidelines drawn from many years of research.
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 Bletchley Park  The Bletchley Park Trust
Also known as Station X, Bletchley Park is the home of the United Kingdom's Government Code and Cipher School (GC&CS). Read about its history, including decrypting the German Enigma code, Alan Turing's contribution of the "Bombe," and the various huts
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 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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 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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 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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 Bonsonhos HomePage  David Salvado
See and learn about trigonometry with the freeware program Círculo Trigonométrico 2.0. Also a way of calculating Pi. Veja e aprenda o que é a trigonometria com o programa freeware Círculo Trigonométrico 2.0. Aprenda
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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 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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 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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 Bootstrap
Providers of formal CS education to girls and underrepresented students in grades 612. Bootstrap's free materials include a nineunit algebra course that applies mathematical concepts and programming principles to the creation of a simple 3character
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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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 BorschtWithAnna  Anna Blinstein
Blog by a Bay area middle and upper school mathematics teacher "working on problembased inquiry, collaborative learning environments, interdisciplinary connections, and rigorous, deep, mathematical understanding." Posts, which date to May, 2012 —
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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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 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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 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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