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  Selected Sites   (see also All Sites in this category)

  1. Geoboards in the Classroom - Tom Scavo
    A Web unit for teachers from Tom Scavo that offers suggestions for using geoboards to explore the length and area of two-dimensional geometric figures. The Introduction includes pages that describe materials needed, offer discussion and activities for investigating length and area (in particular Pick's Theorem), and provide sample pages of dot paper to print out. Five lesson plans focus on lines, squares, rectangles, parallelograms, and right triangles, and a short bibliography rounds out the unit. more>>

  2. Math Learning Center (MLC) - Gene Maier
    A non-profit Oregon-based educational organization that develops and publishes curriculum materials, provides continuing education for teachers, consults with educational agencies, and provides opportunities for parents and others to become knowledgeable about alternatives in mathematics education. Products and services include publications and teaching supplies (books, manipulatives). Materials are typically teaching guides designed for sensory-rich, highly interactive, textbook-free classroom settings, stressing visual thinking entailing the use of models, sketches and other graphic representations. Curricula include Bridges in Mathematics; Algebra Through Visual Patterns; Opening Eyes to Mathematics; Visual Math and Math Alive!; Number Corner; Box It or Bag It Mathematics; and Story Boxes. Conferences, seminars, and workshops are listed, and a searchable catalog is provided. more>>

  3. Toys from Trash - Arvind Gupta
    Step-by-step photographic instructions for building elegantly simple, colorful "Math Magic" do-it-yourself manipulatives: Abacus, Flexagon, Triangle Grid, Flat Flexagon, Slipper Insets, Folding Pentagon, Tangram, Paper Octagon, Cylinder and Cone, Area of Triangle, Inset Puzzle, A4 to Pentagon, Clock Face Cut Cake, Triangle to Square, Triangle to Rectangle, No-Glue Cube, Roulette, Geoboard, Star Patterns, Soap Films, Soap Path, Paper Diamonds, Paper Cobweb, Circle to Ellipse, Fun Fractions, Square Box, T-Puzzle, Plus Puzzle, Old Slipper Insets, Diameter of Refill, Square to Cylinder, Finger Multiplication, Broomstick Multiplication, Paper Protractor, Envelope Tetrahedron, Circle to Rectangle, Rectangle to Circle, Add Angles, Möbius Twist, Folding Parabola, Pythagoras Theorem, Bit by Bit (binary counting on your fingers), Prismatic Patterns, Which Holds More? and more. Some of these homemade constructions come with "one minute films" in English, Hindi, Malaysian, Marathi, Bangla, Tamil, Kannada, and other languages. Others feature PDFs to download for more detailed instructional prompts. See also Gupta's categories "Amazing Astronomy," "Pumps from the Dump," "Paper Fun," "Tipping Toppling Toys," "Motor and Generator," "Electricity and Magnetism," "Newton Unplugged," "Fun with Pressure," "Fun with Light," "Simple Sounds," "Strong Structures," "Flying Toys," "Force Fun," "Spinning Toys," "Air and Water," and "String Games." Gupta has won recognition from the Indian National Science Academy (Indira Gandhi Award for Science Popularisation), the Council of Science Education International (Mary McCurdy Award), and the National Association for the Blind among many other awards. more>>


 
  All Sites - 501 items found, showing 1 to 50

  1. 123math.ca - Math Made Easy
    A program that supplies flash cards, number lines, learning lessons, audio material, emails, and telephone contacts with parents to help students master basic facts of addition, subtraction, multiplication, and division. Cost is $30 Canadian registration ...more>>

  2. 3-D Stars - Free Instructions - James E. Garner
    Free instructions for making 3-D paper stars, using basket weave technique. ...more>>

  3. Aard 3D Puzzles - AardAsNails Software
    Rubik's cube-like puzzles to solve online. Virtually twist and spin a pyramid, cube, diacube, or diamond, selecting solid or transparent views. Purchase the full version for up to ten levels of difficulty and preset problems. ...more>>

  4. The ABACUS International Math Challenge - Tivadar Divéki, Grace Church School
    The ABACUS International Math Challenge is open to students in three categories (grades 3-4/ages 9-10; 5-6/ages 11-12; 7-8/ages 13-14), with 8 problems posed each month. The challenge begins in September and ends in April. It originated with the ABACUS ...more>>

  5. The Abacus - Jim Loy
    Illustrations of the modern Japanese abacus (Soroban) and the Chinese abacus, both showing the number 1998, how to add "one" to a number, and how to carry. ...more>>

  6. AbacusMaster - Shabeeb Mohammed
    AbacusMaster sells a 17-rod soroban abacus and interactive tutorial software that covers abacus addition, abacus subtraction, abacus multiplication, and abacus division with more than hundred animated examples. ...more>>

  7. The Abacus: The Art of Calculating with Beads - Luis Fernandes
    A tutorial on using the abacus - a calculator whose earliest known use is circa 500 B.C. by the Chinese civilization. Addition, subtraction, division and multiplication can be performed on a standard abacus. Beginning in about 1600 A.D., use and evolution ...more>>

  8. About Rubik's Cube - Dan Knights
    See the author's collection of Rubik's cubes, his solution and timing methods, thoughts on solving Rubik's Cube with your eyes closed, and suggestions for lubricating your cube and where to get them. ...more>>

  9. ACME Klein Bottles - Cliff Stoll
    "Searching for a one-sided surface? Need a zero-volume bottle? Want the ultimate in non-orientability? Get an ACME Klein bottle!" Available in several different models, including classical, Erlenmeyer flask, sliced, spiral, "weirdies," and special designs. ...more>>

  10. Activities for Learning (AL) Mathematics Program - Joan Cotter
    The RightStart Mathematics program covers grades K-4 with a transition program for converting to RightStart. Teacher's manuals include daily lessons and worksheet blackline masters. A comprehensive program for homeschoolers, grades K-4, is based on the ...more>>

  11. Activity Resources - Activity Resources Inc.
    Created by Mary Laycock for mathematics teachers, with the goal of providing a real understanding of mathematics through hands-on (manipulative) activities. Purchase books and manipulatives on arithmetic, base ten, red and blue blocks, Cuisenaire rods, ...more>>

  12. Adding Integers (SMILE) - John Charles Thomas, N. F. Simeon Vocational High School
    A lesson designed to teach students to add and subtract integers, and define terms (additive inverse, identity element of addition, associative property of addition, addend, sum, magnitude). From the Arithmetic section of a collection of almost 200 single ...more>>

  13. Adding Mixed Numbers with Unlike Denominators (SMILE) - Camille Gales, Edward Coles Elementary School
    A 7th grade lesson designed to provide students with practice in adding mixed fractions with unlike denominators. From the Arithmetic section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement. ...more>>

  14. Addition and Subtraction of Signed Numbers (SMILE) - David Drymiller, Morgan Park High School
    A lesson designed to help students master the addition and subtraction of signed numbers, and learn to recognize linear equations of the form x + a = b and their solutions. From the Arithmetic section of a collection of almost 200 single concept lessons ...more>>

  15. The Aerobie® Flying Ring - Alan Adler
    A scientific paper by the inventor of the Aerobie® flying ring: "The most difficult aspect of the design task is that the disc must fly over a wide range of α (angle of attack).... A conventional Frisbee disc partially accomplishes this by employing ...more>>

  16. Alex Bateman's Origami Page
    Models by Alex Bateman, Dino Andreozzi, Nick Robinson, and a duck by Edwin Corrie. Includes directions for folding some origami tessellations: square dance, honeycomb, linked circles. Spirals based on Voderberg's tilings, tessellations based on 6.3.6.3 ...more>>

  17. Algebra, Abstract and Concrete - Frederick M. Goodman
    An undergraduate textbook (Prentice Hall, 1998). The book is intended to be useful for a course in modern algebra for beginners or a slightly more advanced course, or an undergraduate course on geometric aspects of group theory or Galois theory. Interactive ...more>>

  18. Algebraic Addition (SMILE) - Alex Junievicz, Kelly High School
    A lesson that uses play money and IOUs to reinforce concepts around negative numbers. From the Algebra and Trigonometry section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement. ...more>>

  19. Algebraic Factoring - Suzanne Alejandre
    A Math Forum Web Unit. Vocabulary, objectives, materials. Students use algebra tiles to explore algebraic factoring. ...more>>

  20. ALGEBRA - Mathematical abstraction from concrete experience - College of Early Learning
    How a Montessori student learns algebra while interacting with manipulatives represented by expressions incorporating numerals and variables. Contents include: The proper interpretation of a numeral by answering three questions: How many objects? What ...more>>

  21. The Amazing Abacus - ThinkQuest 1996
    An exploration of the abacus. Learn to use the abacus and what it is for, and to speak and write Chinese numerals and formulas. ...more>>

  22. Analog Gadgets - Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
    Java simulations of analog gadgets. Includes an analog device simulation for drawing ellipses, a Peaucellier Linkage simulation, an angle trisection demonstration, a demonstration/essay on cycloids, and applets on geoboards (with a proof of Pick's Theorem) ...more>>

  23. Apples A Peel To Me (SMILE) - Olga Moreno, Horace Greeley School
    A K-1 lesson designed to teach students to understand real and representational graphs; to recognize some different varieties of apples; and how to gather, record and interpret data. From the Graphs and Visuals section of a collection of almost 200 single ...more>>

  24. Archimedes' Square (Stomachion) - Kadon Enterprises, Inc.
    Square puzzle dissected into 14 tiles, described in Archimedes' palimpsest. Oldest documented puzzle in history, from ca. 250 B.C. Now known to have 536 distinct solutions. ...more>>

  25. Area and Perimeter (SMILE) - Monica Starks, John Fiske Elementary
    A middle school lesson on measuring and calculating the area and perimeter of squares, rectangles, triangles, etc. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative ...more>>

  26. Area, Arithmetic and Algebra (SMILE) - Larry Freeman, Kenwood Academy
    A lesson designed to show teachers how area of rectangles and squares can motivate the learning of multiplication rules for certain binomials; how students can perform arithmetic based on these identities; and several applications of the "distributive ...more>>

  27. The Area of a Circle (SMILE) - Edwina R. Justice, Gunsaulus Academy
    A grade 8 lesson designed to teach the relation between circumference and diameter and how that relation, called pi, is used in the formula for the area of a circle. From the Geometry and Measurement section of a collection of almost 200 single concept ...more>>

  28. The Area of a Circle (Version 2.0) (SMILE) - Edwina R. Justice, Gunsaulus Academy
    A grade 8 lesson designed to review areas of plane figures; determine the relation between the circumference and diameter of a circle; show the geometric representation of the area of a circle as the shape of a parallelogram; and use the formula for computing ...more>>

  29. Arithmesticks - Michael Varma, Magical Concepts
    Simple equations made out of sticks--move one stick to make the equation correct. This site has example problems in each of the four basic operations, and sells kits of sticks and equations cards. ...more>>

  30. Arts & Crafts Class: Let's Fold Origami - Japan Window Project, Stanford University and NTT
    Directions for folding an origami crane and a yakko (in the Edo Period, a Yakko was known as a male servant or a valet to a high-class samurai. The figure shown is a representation from the waist up. The diamond shape is the head and it is possible to ...more>>

  31. Averaging (SMILE) - Sharon Thomas, Emmanuel Christian School
    A 6th grade lesson designed to teach students to identify a range; recognize the score that occurs most frequently in a distribution; locate the middle point in a distribution; and find the average of a given set of numbers. From the Probability and Statistics ...more>>

  32. Base Ten Block Activities - Margo Lynn Mankus
    Manipulate a Base 10 Block Applet developed by Jacobo Bulaevsky to explore whole decimal numbers with blocks. There are printable examples of pattern blocks, graph paper, rods, and color tiles, and activities designed to make connections between the use ...more>>

  33. Basic Mathematical Operations Using Mathtiles (SMILE) - Claudia R. Jones, Farragut Career Academy
    A lesson that uses manipulatives to teach students addition, subtraction, multiplication, and division. From the Arithmetic section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement. ...more>>

  34. 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 ...more>>

  35. Beyond the Ellipse - Ivars Peterson (MathLand)
    There's a simple trick one can use to draw an ellipse. Tie the ends of a length of string to two pins (or thumbtacks) stuck in a sheet of paper on a drawing board. Then, keeping the string taut with the point of a pencil, allow the pencil to trace a path ...more>>

  36. Beyond Traditional Math
    Blog by a teacher who "was appalled to be handed a math book in which all instruction was whole group," and who subsequently "went on a mission to change and move beyond that traditional model of math in the elementary classroom." Subtitled "Fostering ...more>>

  37. Bill Cutler Puzzles - Bill Cutler Puzzles, Inc.
    Wooden puzzles for sale: six piece burr puzzles, rectilinear burr puzzles, non-rectilinear burr puzzles, box-filling puzzles, and miscellaneous puzzles. The computer program BCPBOX solves box-packing problems such as pentominoes; GENDA determines how ...more>>

  38. Boomerang (SMILE) - Wilhelm L. Lilly, Kenwood Academy High School
    A lesson for grades 4-12 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 ...more>>

  39. 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 ...more>>

  40. Bricks Activity - Suzanne Alejandre
    A classroom activity (also called the Masonry Problem; a variation on polyominoes) aligned to the NCTM and California Standards, to be explored through manipulatives (dominoes). Students explore different possibilities of making brick walls with and without ...more>>

  41. BrighterDiscovery.com - KW Studios, Inc.
    Products for children to "reach their full potential while having fun doing it." Browse by age (from 0-12 months to 8+ years) or product type, including Activity Toys, Alphabet & Numbers, Blocks & Building Sets, Games, Puzzles & Logic, and ...more>>

  42. Budgeting Money (SMILE) - Yolanda Smith, Douglass Math and Science Academy
    A lesson for grades 6-8 designed to teach students how to budget a monthly income; basic math techniques integrated with reading and social studies skills; how to search for employment in the want ad section of a newspaper; and the difference between ...more>>

  43. Building Models of Surfaces - Joan Hoffman, Swarthmore College
    Physical models to be used as aids in understanding 3-dimensional surfaces - some how-to pages for building surfaces that appear in multi-variable calculus, by Swarthmore College student Joan Hoffmann. ...more>>

  44. The Burr Puzzles Site - IBM
    A Burr Puzzle consists of at least three rods intersecting each other at right angles. The most well-known type is the six piece burr where three sets of two rods intersect each other. This site lets you explore six piece burrs by selecting from a list ...more>>

  45. 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 put-together manipulative that makes an 8x8 checkerboard, a 4x4x4 cube and over 50 other tessellated shapes: details, solution ...more>>

  46. The Center for Innovation in Education
    Co-founded in 1975 by two classroom teachers, Mary and Bob Baratta-Lorton, 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 ...more>>

  47. ChisenBop (or Chisanbop) - Andrew Harris, Computer Science, Indiana & Purdue Universities
    An ancient technique from Korea, similar to the abacus or soroban: using your fingers as an analog computer, illustrated and with Real streaming media lessons. Background; simple counting; simple adding and subtracting; adding "around the corner"; subtraction ...more>>

  48. Circle Scribe Disk Compass - Bill Harper
    A new instrument for manually exploring shape and space, used to draw diagrams on paper, from cartoon characters to limacons, as well as standard geometric constructions. Unlike toys like spirograph, the Circle Scribe Disk Compass requires some geometrical ...more>>

  49. Circles - Diameter, Circumference, Radius and the Discovery of Pi (SMILE) - Kathleen Ryan, Randolph Magnet School
    A 7th grade lesson designed to help students identify and measure the diameter, circumference, and radius of a circle. The students discover the approximate value of pi through the relation between the diameter and circumference. From the Geometry and ...more>>

  50. Circular Reasoning - TJ Leone, Leone Learning Systems, Inc.
    A free, Java-based software tool for thinking about circles, sectors, segments, and angles. Based on Montessori principles of learning through the manipulation of objects. Activity cards included. For Windows computers only. Includes ideas and stories ...more>>


 
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