 Discovering Geometry Newsletter  Key Curriculum Press
A free biannual publication providing information and teaching techniques for The Geometer's Sketchpad software package, the Discovering Geometry Newsletter is a resource for those interested in geometry and technology education. Download PDFs of past
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 Edward Tufte
The work of Tufte and Graphics Press. Read testimonials about his books and purchase them online: The Graphic Display of Quantitative Information, Envisioning Information, and Visual Explanations: Images and Quantities, Evidence and Narrative. In the
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 ESCOT (Educational Software Components of Tomorrow) Problems of the Week  Math Forum
An interactive problem of the week service offered from 1999 until 2001. ESCOT is an NSFfunded research grant that developed interactive Java applets to help middle school learners understand typically difficult math concepts, for example, fractions
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 Exercises in Imagination (Geometry and the Imagination)  Conway, Doyle, Gilman, Thurston; The Geometry Center
How do you imagine geometric figures in your head? Most people talk about their threedimensional imagination as 'visualization', but that isn't exactly right. A visual image is a kind of picture, and it is really twodimensional. The image you form in
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 FifthGrade Empathy ... For Plants  William E. Ray; Kodak
Children were introduced to this project by taking them outside Pinoak Elementary School, Oil City, PA, in March and having each pair of them select a living
plant specimen. Buds were noticed as being a part of each plant and were the plant parts which
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 Five Twelve Thirteen  Dylan Kane
Blog by an eighth grade math teacher in Boston. Posts, which date back to October, 2012, have included "Assessment & Rigor," "Pythagorean Triples Function," "Construct Viable Arguments and Critique the Reasoning of Others," "Guatemalan Sinkhole," "Problem
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 Fractals in Science: Simulations  Center for Polymer Studies, Boston University
Handson activities, laboratory experiments, and interactive visualization programs that encourage students to explore how fundamentally random microscopic events can give rise to fractal macroscopic patterns. An image gallery and fractal related software
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 Geometry Everywhere  Betty R. Allen; Kodak
An activity intended to make students more aware of geometric shapes and lines in objects around them. Students were divided into five groups, four to photograph geometric shapes and concepts at home, on the farm, in town, and at the lake, and one group
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 The Golden Section In Art, Architecture and Music  Ron Knott
An introduction with illustrations and references to some applications and occurrences of the Fibonacci series and the Golden Ratio in architecture, art and music. The constant Phi has been used to design architecture, from the Parthenon in Athens to
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 Just Tell Me the Answer  "Never!"  Matt Owen
Blog by an algebra and physics teacher who believes students "have a real chance at understanding if I'm just willing to let them struggle." Posts, which date back to August, 2012, have included "Answering 'the Question,'" "Flipclass Reflections So Far,"
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 Karismath  Shad Moarif
Learn math through visual scaffolding, whereby "... a math concept is first understood with the help of visualization, then gradually assimilated as an abstract idea in stages of decreasing visualisation and increasing numeracy." More than 10,000 worksheets
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 Math Lesson Plans from Movies and Film  TeachWithMovies.com, Inc.
Suggestions on possible math problems, discussion questions, assignments, and classroom benefits that come out of movies, documentaries, and other films such as Donald in Mathmagic Land, Contact, Isaac Newton: A Tale of Two Isaacs, Powers of Ten, Cosmic
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 The Nature of Mathematics  Ouida B. Kinzey; Kodak
A description of how students created a mathematical slide show based on research projects. Colorado State Standard addressed: students develop number sense and use numbers and number relationships in problemsolving situations and communicate the reasoning
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 One, Two.. Infinity  Marian Small
PDFs of presentations from the professional development consultant and author of Making Math Meaningful to Canadian Students K8, More Good Questions: Great Ways to Differentiate Secondary Mathematics Instruction (9  12), Eyes on Math: A Visual Approach
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 Peek: Ndimensional polytope visualization by crosssection and projection  Gordon Kindlmann
A program to explore higher dimensional objects interactively through the use of crosssections and projections. The goal is for the user to gain some intuition about higherdimensional geometry. Projective views and 3dimensional crosssections of hypercubes.
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 PhotoMath  Martha Jean Barrett; Kodak
A project where students created their own mathematical board games for use with younger or less advanced students, for grades 48. Working in teams, advanced students covered seven math categories: whole numbers, decimals, fractions, measurement, geometry,
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 ReInventing FourthGrade Mathematics  Jack J. Lopez; Kodak
A series of four related activities through which students acquired a firm, active knowledge of some of the basic terminology of Euclidean geometry, learning the vocabulary for describing various geometric shapes and transformations. Students photographed
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 Science Museum Math Exhibit  The Geometry Center
A museum exhibit on triangle tilings that contains sophisticated concepts such as tilings of the sphere and the relation between tilings and the Platonic and Archimedean solids: the sum of the angles of a planar triangle is always 180 degrees. Repeated
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 The Singapore Math Coach  Tricia Salerno
Problems of the week based on the Singapore math approach. Students with correct answers can see their names on the web. Site includes some program information as well.
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 Spatial Intelligence and Learning Center
The Spatial Intelligence and Learning Center (SILC) researches spatial learning and develops educational programs and technologies. Every month, the SILC showcase highlights research by different members, who include cognitive scientists, psychologists,
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 Thales' triangles  Joshua Bowman
Blog about "teaching and doing mathematics at a liberal arts college." Posts by this Smith College professor date back to July, 2006: "instability and control"; "the end of a good man's life" (on the death of mathematician Adrien Douady); "Klein's quartic
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 Transformulas  Jedidiah Butler
Blog about transformational geometry, subtitled "picture = 100 formulas." Posts, which feature Butler's original GeoGebra applets and teaching notes, date back to March, 2014: "One Formula ... to Rule them All," "Circles Part 2: Angle Relationships,"
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 VisualMath  Software And Engineering Co.
A graphic language for solving all types of problems, providing over 80 components, all of which are capable of using matrix input. Many dialogs are used to define properties. A special 3D plotter and table viewer show the results of the solution. VisualMath
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 Zombie Cat  Diego Fonstad
Zombie Cat shares learning catalysts  those "perfect stories, explanations, or methods to teach complex mathematical and scientific concepts." Insightful math learning catalysts date back to January, 2011, with categories such as "Videos worth watching"
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