 19th Century Schoolbooks  University of Pittsburgh
Search the full text of dozens of antique books used to learn and practice arithmetic and other mathematical subjects in the schools of 1800's America. Browse scanned images (gif or PDF) of centuriesold pages, or search for text within primers, readers,
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 3Blue1Brown  Grant Sanderson
Video explanations that elucidate with computer animations, changes in perspective, humor, and — occasionally — rhyming voiceover: Euler's formula, circle division (disjoint regions obtained by joining n points around a circle), and complex
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 ActivePrompt  David Wees
"A different framework for gathering information about what your class understands": upload an image, key in a prompt (e.g., "Where does circle number 5 go?"), and ActivePrompt combines them into an interactive poll to canvas your students. By aggregating
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 Advanced CSS Rendering: Embedding Mathematical Content in HTML  George Chavchanidze
Discussion of a crossbrowser method of rendering mathematical content using HTML and cascading style sheets (CSS). A set of CSS style sheets for online scientific publishing is available.
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 Agree or Disagree?  Tim McCaffrey
Twenty secondlong video scenarios to motivate math students to "choose a side, start a fight, justify, ask questions, ask for information." Prompts, which date back to October, 2014 and come with sets of accompanying Microsoft PowerPoint clips, have
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 Analysis & Knowledge  Sanford Aranoff
Download data analysis software, such as Patterns, which analyzes and charts trends in stock market using Andrews concepts. See also this former Rutgers University physics professor and current high school educator's thoughts on teaching and help file
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 Anna Stokke
Teaching, research, and other activities of the cofounder of the nonprofit Archimedes Math Schools and of the advocacy group WISE Math. See, in particular, the "advocacy & math education" tab for the mathematics professor's editorials and interviews
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 arbitrarilyclose  Annie Perkins
Blog by a secondary math teacher in the Minneapolis Public Schools for whom the phrase arbitrarily close "encapsulates the things I can control, the things I cannot, the impossibility of this craft [of teaching], and the beauty of the exploration despite
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 The Art of Asking Thought Provoking Questions in the Mathematics Classroom  Carmen Bellido, Uroyoan Walker, Keith Wayland
A position paper in PDF format: a "How To" guide for developing higherlevel conceptual questions that provoke students to think. Several techniques for modifying traditional questions are illustrated with examples ranging from elementary to high school
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 Authentic Inquiry Maths  Bruce Ferrington
Blog by an Australian teacher who advocates Tedious Repetitive Activities Involving Number (TRAIN) for the Genuine Application of Mathematical Experience (GAME). Posts, which date back to April, 2012, have included "Top 10 Maths Songs," "Maths and Making
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 BasketMath Interactive  Robert Cummings, Science Academy Software
Science Academy Software's BasketMath online interactive application drill and practice site offers autoscoring questions in arithmetic, rounding and writing numbers, order of operations, factoring, adding or multiplying signed numbers, calculating perimeter
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 BEAM: Be A Mathematician
A mathematics curriculum development project for nursery, primary, special and lower secondary teachers. It publishes resource materials for teachers' use in the classroom, offers training courses for teachers, and provides consultancy in the area of
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 A Better Mathematics Curriculum  Tom Davis; Math Forum, Ask Dr. Math FAQ
What should we be teaching students today? Dr. Tom provides his take on what would make a better math curriculum.
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 Bicycle Tracks (Geometry and the Imagination)  Conway, Doyle, Gilman, Thurston; The Geometry Center
Students are to discuss passage from a Sherlock Holmes story, The Adventure of the Priory School (by Arthur Conan Doyle): 'This track, as you perceive, was made by a rider who was going from the direction of the school.'...
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 Bilingual Mathematics Dictionary / Diccionario Bilingüe de Matemáticas  Norman Koch and Denise Meeks
An alphabetical list of terms in English with their corresponding Spanish translations, from abacus (el ábaco) to zone (la zona). The purpose of this glossary of math terms is to make readily available in one convenient document a list of terms
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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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 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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 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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 cavmaths  Stephen Cavadino
Blog by a maths teacher and KS5 coordinator. Posts, which date back to July, 2012, often incorporate social media and snapshots of scratch work: "Christmaths Projects," "Engaging with Written Feedback," "Consistency, Humour, Well planned Lessons and
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 Cédric Villani
For mathematicians, the 2010 Fields Medalist offers his publications, lecture notes for students, errata sheets, and his research into collisional kinetic theory (Boltzmann type), collisionless kinetic theory (Vlasov type), and optimal transport. "For
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 cheesemonkey wonders  Elizabeth Statmore
Blog by a San Francisco high school teacher who came to the classroom by way of "many years as an entrepreneur and executive in Silicon Valley." Statmore left industry after seeing "too many good, smart people who were missing out on wonderful career
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 Colors of Math  Ekaterina Eremenko Films
Credits, still images, and trailer of a documentary film that features six mathematicians discussing math "in the context of the five senses" of sight, sound, smell, taste, and touch. The Courant Institute of Mathematical Sciences New York University
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 Common Core Algebra II Statistics and Probability  Maryland Public Television
Modules of lessons enlivened by computer animations, journal prompts, interactive "check your understanding" selfassessments, and more: linear, quadratic and exponential regression; regression; standard deviation; inferences; probabilities of compound
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 Conception of the Good  Naveen Rizvi
"Insights into our current education system" by a UK classroom teacher. Rizvi, a selfdescribed "believer in teaching via direct instruction," blogs to "share ideas and model how I have implemented these ideas and then discuss the impact of the number
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 Constructing Math Instruction  Chris Robinson
Blog by teacher "averse to binary thinking that refuses to countenance all the complexities of the minefield that is the real classroom." Posts, which date back to December, 2012, have included "Number Sense and My Students"; "Analyzing Student Questions";
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 Contexts for Learning Mathematics  Catherine Fosnot
Heinemann's supplemental series uses "carefully crafted contexts" and mathematical "situations" as starting points to support learning through investigations.
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 Count Me In  JoAnne LeFevre, Director
Research on the effects of culture and language on preschool children's ability to learn to count and complete other early numeracy tasks. Participants include Turkish, Chinese and English speakers. Publications from the team of researchers from Carleton
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 CueThink
Makers of social, collaborative, interactive learning environments such as CueThink, a peertopeer iPad application for grades K12.
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 Dadaviz  León Markovitz and Jishai Evers
Interactive data visualization curated from thirdparty sources. Infographics, which date back to April, 2014, have included "GDP per Continent & Country," "The major causes of death in the 20th Century," "4_21 Polytope Visualized," "The Changing Arctic,"
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 Department of Science & Mathematics Education: Research and Development  Univ. of Melbourne, Australia
Read faculty research and learn about their projects and interests: children's understanding of statistical and probabilistic concepts; the negotiation of meaning in mathematics & science classrooms (The Classroom Project); the expression of algorithms
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 Dictionary of Number Words  Intergalactic Power & Light
A dictionary of English language words, phrases, prefixes, suffixes, and
symbols that describe numbers. Cardinal Numbers, Ordinal Numbers, very large numbers, Noninteger Real Numbers, Numeric Ranges.
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 Divisible by 3  Andrew Stadel
Stadel has taught prealgebra, algebra, and geometry in middle school since 2004. His blog about "interactions with math, logic, life, teaching, and the web they spin together" dates back to March, 2012, with posts such as "Survey your students"; "2012
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 Doron Zeilberger's Electronic Headquarters
Doron Zeilberger researches combinatorics using computer programs. The site is notable for his Opinions page; these opinions are wideranging but touch upon mathematics education, the use of computers, and the value of incomplete proofs. All of Zeilberger's
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 EASYpEXPR: Writing Expressions in Pure HTML  Giovanni Artico
Enter an expression in the textbox, and the page will return the HTML code that would show the expression in standard visual form.
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 Education by Design
Publishers of educational software, focusing on special needs software for Windows and Macintosh that can be accessed with keyboard, mouse, and especially with IntelliKeys, Touch Windows or with switches. Math titles include MathPad, an arithmetic tutorial
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 Elementary Thoughts: A Collection of Gail's Responses  Gail Englert
A collection of Gail Englert's responses to questions from elementary and middle school teachers, parents, and students, in the Teacher2Teacher service. Covers a wide range of elementary mathematics topics, as well as teaching points.
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 EMail Math  Elizabeth Murphy
Using the Internet for a global exchange of studentwritten math story problems. Grade 4 students participated in an enrichment project entitled Cross Cultural Story Problems in Math from December '94 to May '95. Students received story problems from
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 EnglishSpanish Numbers  EnchantedLearning.com
Read words and pronunciation guides for the numbers zero (cero) through twelve (doce). Link to a number matching quiz printout or a number writing printout.
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 EnVision: A tool for live webbased communication in the mathematical sciences  Marco Pollanen
EnVision is a Webbased whiteboardchat program that assists in the live communication of mathematical content. It has been used to conduct online office hours in introductory courses. It allows students to log in anonymously and thus reduce anxieties
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 EquPlus  Maria Chernenko
An index of math and science equations, rendered in TeX, MathML, png image files, and MathType. Browse categories such as algebra, calculus, geometry, signal processing, trigonometry, and statistics. See also EquPlus's unit conversions, constants, and
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 The Erdös Number Project  Jerry Grossman
Paul Erdos wrote hundreds of mathematical research papers in many different areas, many in collaboration with others. His Erdos number is 0. Erdos's coauthors have Erdos number 1. People other than Erdos who have written a joint paper with someone with
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 Eric Buffington
YouTube lessons and other educational math videos by a Pennsylvania cyberschool teacher. See, in particular, Buffington's channels on "Math That Makes you Think," "Math in Real life," and episode 1 and episode 2 of "What Kids Say About Math."
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 e Teaching Assistance Program  eTAP, Inc.
Lesson plans, examples and exercises, review checks, and other instructional materials, including audio downloads, on the language of mathematics; basic operations; order of operations and combining terms; fractions; multiplying and dividing fractions;
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 Every Day Counts with PFK Consultants  Pasty F. Kanter
An elementary math education company offering staff development workshops based on author Patsy F. Kanter's "Every Day Counts" family of products (published by Great Source Education Group). The workshops focus on making math a daily activity, encouraging
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 Everyday Mathematics: A Parent's Handbook K5  Oswego School District
Classroom routines, standards by grade level, examples, glossary, and other resources. Learn about number families, number stories, games such as factor captor, and algorithms such as addition by partialsums, subtraction by countingup, lefttoright,
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 Fermi OfftheWall Math League  Karen Newell, Intermediate District 287, Plymouth, Minnesota
A Fermi question is posed with limited information given, and requires that students ask many more questions; for example, "How many water balloons would it take fill the school gymnasium?" ("What are the approximate dimensions of the gym?") Register
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 Fermi Questions  Sheila Talamo
Fermi questions emphasize estimation, numerical reasoning, communicating in mathematics, and questioning skills. Students often believe that "word problems" have one exact answer and that the answer is derived in a unique manner. Fermi questions encourage
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 First Day of School  Math Forum, Teacher2Teacher FAQ
Answers to a frequently asked question: What do you do on the first day of school?
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 FiveThirtyEight  Nate Silver, Editor in Chief
Quantitative features, interactives, and "datalabs" on politics, economics, sports, and other topics by Silver, Carl Bialik, and others. Science posts have included "How Statisticians Could Help Find That Missing Plane," "Toilet Seat Covers: To Use or
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 Flip Flop Fly Ball  Craig Robinson
"A love of baseball plus a love of visual representations equals Flip Flop Fly Ball." Robinson's infographics include Diamonds in Manhattan, a map of every baseball or softball diamond on the island of Manhattan; Baserunning, which puts into perspective
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