 handsonmath.com  Charles Gronberg
Handson geometry model building materials to purchase, tested and test marketed by the American Association for the Advancement of Science in the late 1990s with the intention of targeting atrisk middleschool students (minorities and girls). The
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 HappyMath Multiplication Kit  ReinhardBernard Enterprises
Memorizing multiplication facts is made easy and fun for children by combining pictures, rhymes, rhythms, stories, and color. Sample the sound on the Web, or purchase the kit, which includes an instruction manual, audio tape, multiplication cards, matching
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 Having Fun working With Fractions (SMILE)  Brian Cagle, John W. Cook School
A lesson for elementary students designed to model addition and subtraction by shading parts of regions; divide a word into appropriate fractional parts; pay attention to details in instruction relating to "first," " last," "second," etc.; analyze clues
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 Henry Segerman's webpages  Henry Segerman
Mathematical and typographical art "of various kinds and dimensions." See, in particular, Segerman's 3D printed sculpture, book covers and posters, diamond Go, ambigrams, autologlyphs, autological words, Escher's Printgallery, and mathart tshirts available
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 Hessport's Rubik Shop  Hessport's Rubik Shop
Buy Rubik's Cube, Rubik's Revenge (4 x 4 x 4), Rubik's Professor (5 x 5 x 5), Rubik's Magic, Rubik's Rings, Rubik's Shells, Rubik's UFO, Rubik's Mini (2 x 2 x 2), Rubik's Snake, Rubik's Tangle, Rubik's Triamid, Rubik's Double Tangram, Rubik's Bricks,
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 Hey Math!
Animated lessons on a wide range of topics, plus a repository of questions indexed by concept and grade. Many more lessons are available for purchase. Started in Chennai, India, by Nirmala Sankaran and Harsh Rajan, Hey Math is a partnership with the Millennium
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 History Of Our Solar System on a Time Line (SMILE)  Richard Murray, Gage Park High School
A lesson designed to teach students how to use ratios to make scale models. From the Graphs and Visuals section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Home Page  Tony Roberts; Dept. of Mathematics and Computing, University of Southern Queensland, Australia
Links to recent research papers (titles, abstracts and electronic copies of recent research documents); software (computer routines to do various taks such as estimate fractal dimensions, solve DAEs, etc,, mainly in Matlab); teaching and other material
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 HOT Math  Pauline Vos
Handson tasks in the mathematics classroom, a resource site for teachers of students around 14 years of age. Among the topics are angles, symmetry, scale drawing, balance algebra, tables, combinations, statistics, probability, reasoning, finding rules
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 How Divine Is My Proportion? (SMILE)  Edwina R. Justice, Gunsaulus Scholastic Academy
A lesson for grade 8 that relates the ratio of successive numbers in the Fibonacci Sequence to the "divine proportion" and compares approximate golden rectangles to human body proportions. From the Arithmetic section of a collection of almost 200 single
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 How do You Stack Up? Revisited (SMILE)  Robert Foote, Walt Disney Magnet School
A lesson designed to teach students to estimate the number of pennies, nickels, dimes and quarters in plastic bags; build stacks of each type of coin; find the thickness of a penny, nickel, dime and quarter after measuring their stacks; measure to the
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 How Much is a Million? (SMILE)  Sharon Simmons, Joseph Stockton Elementary School
A lesson for grades 78 designed to teach students to estimate how much a
million of something weighs. From the Recreational and Creative Math section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for
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 How To Measure Area (SMILE)  Levi Johnson, James Otis
A 7th grade lesson designed to help students gain an understanding of square units. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 How to Solve a Rubik's Cube Guide for Beginners  John Wade
An illustrated guide to solving Rubik's cube in seven steps.
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 How to Solve the Rubik's Cube v1.4  Mark Jeays
A complete solution to solving the cube from any position, credited to David Singmaster, who wrote the 1980 book Notes on Rubik's Magic Cube, except for Step 2, discovered independently by Mark Jeays.
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 How to Use an Abacus (SMILE)  William Gordon, John Hope Academy
A lesson designed to demonstrate the properties and operations of a number system; develop an understanding of the commutative, associative and distributive properties of the mechanics of the abacus; and to help students understand the place value of
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 Hypergami (Geometry Forum Summer Institute)  Michael Eisenberg, Ann Nishioka
A program for the creation of paper sculptures of various types  particularly polyhedral models and the larger, multipart sculptures that can be created from polyhedra. Description of a Geometry Forum Institute program (summer 1995).
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 Identification of Equivalent Fractions (SMILE)  Bette B. Jarrow, Gaudy School
A modified rummy card game designed to teach students the meaning of a fraction; to identify the fractional representation for "one whole"; and to recognize the renamed fraction after it has been increased or reduced. From the Arithmetic section of a
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 Inch by Inch and Centimeter by Centimeter Extravaganza (SMILE)  Pamela J. BatesHines, Ninos Heroes Academy
A lesson for the very early grades designed to teach students to measure one inch to a yard; measure one centimeter to a meter; and compare and contrast standard to nonstandard units of measurement. From the Geometry and Measurement section of a collection
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 Inequalities (SMILE)  Ben Butler, Jr., Gage Park High School
A lesson designed to teach students how to transform inequalities and find their sets. From the Algebra and Trigonometry section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Information on Pentomino Puzzles  Frank Ruskey; Dept. of Computer Science, Univ. of Victoria, B.C., Canada
A pentomino is an arrangement of 5 unit squares (or sometimes cubes) that are joined along their edges. Up to isomorphism (rotating and flipping), there are 12 possible shapes, which are illustrated. Each piece is labelled by the letter that most accurately
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 Instructional Fair Group  TS Denison
The 2000 catalogue of over 4000 products. Select mathematics to search by keyword or find product groupings under: algebra; base ten; basic operations; calculus; fractions; games & game pieces; geometry; mathematics kit; measurement; numbers &
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 Integer Jim's Math Squad  Jim Bennett
Creative ways to use art, writing, research, and Internet projects to make math more exciting for students. The Math Squad art projects are yearlong projects; rather than "lesson oriented," they create an "adventure theme" that facilitates math instruction.
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 Integer: TicTacToe Four In A Row! (SMILE)  Conchita A. Little, Terrell School
A lesson that employs a phenomenological approach to the introduction of integers using a coordinate plane and ordered pairs. From the Recreational and Creative Math section of a collection of almost 200 single concept lessons by the Science and Mathematics
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 Interior Design (SMILE)  Sally Hill, Horatio May Community Academy
A lesson for grades 46 designed to teach students to calculate area and perimeter in inches. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Introducing Powers And ModelsII (SMILE)  Sarah Barrett, Mars Hill School
A lesson designed to teach students powers and models using Multiplication Rummy, a card game that provides practice in rapid calculation to increase the acuity
of excellent students. From the Arithmetic section of a collection of almost 200 single
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 Introducing Powers and ModelsI (SMILE)  Sarah Barrett, Mars Hill School
A lesson for grades 410 designed to teach students to discover how to square numbers; that squares are areas; the meaning of terms (exponent, to the power of, etc.); to visualize powers; to construct models and describe shapes; and to manipulate puzzle
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 An Introduction to Angles (SMILE)  Samuel A. Anoma, Hyde Park Career Academy
A lesson designed to teach students to name, classify, identify, and measure angles. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 An Introduction to Area and Perimeter (SMILE)  Edwina R. Justice, Gunsaulus Scholastic Academy
A lesson for grades 47 designed to use a phenomenological approach to teach students to measure, record, discover, and apply rules for area and perimeter. From the Geometry and Measurement section of a collection of almost 200 single concept lessons
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 Introduction to Curve Stitching: Line Designs (SMILE)  Wilhelm L. Lilly, Kenwood Academy
A lesson designed to develop students' awareness that straight line segments can produce the illusion of a curve, and their ability to recognize and describe number patterns; and to help them experience the beauty of mathematics by introducing geometric
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 An Introduction to Data Reading and Computations (SMILE)  Christeen Brown, Robert Fulton Elementary School
A lesson for grades 35 designed to teach students to identify data on the horizontal (x) axis and vertical (y) axis; read numbered pounds on a weight scale; estimate pounds upon sight before being given a known weight; identify actual weight; understand
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 Introduction To Equivalent Fractions (SMILE)  Rose Cartwright, Lyman Trumbull School
A lesson designed to examine the partwhole relation of numbers and to compare one fraction to another in order to discover their equalities. From the Arithmetic section of a collection of almost 200 single concept lessons by the Science and Mathematics
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 An Introduction to Estimation and Measurements (SMILE)  Christeen Brown, Robert Fulton Elementary
A lesson for grades 35 designed to teach students to convert ounces to pounds; measure liquids; describe measurements in sizes; measure volumes; understand the importance of knowing and using the measurements; observe shapes and sizes in measurements;
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 Introduction to Fractions on the Numberline (SMILE)  Claudia R. Jones, Crane High School
A lesson designed to teach students to read fractional parts of an inch on a ruler, and to deal meaningfully with the typical number line. From the Arithmetic section of a collection of almost 200 single concept lessons by the Science and Mathematics
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 Introduction to Fractions Using Cuisenaire Rods (SMILE)  Gwendolyn M. Manson, Benjamin Banneker School
A lesson for grade 5 designed to teach students to develop concept and fractional relations; learn numerical values of rods and relate them to color and length; use varied approaches to discovering new fractional relations; write a problemsolving story;
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 An Introduction to Percent (SMILE)  Kenneth Surdell, Lewis School
A lesson for grade 5 designed to develop a basic understanding that percent is a
comparison of some number to 100; and to teach students to convert fractions to percent, percent to decimals, and vice versa, with a minimum of 90 percent accuracy. From
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 An Introduction to Pi and the Area of a Circle (SMILE)  Edwina R. Justice, Gunsaulus Scholastic Academy
A lesson for grades 57 that uses a phenomenological approach to observe and discuss 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
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 An Introduction To Sets (SMILE)  John P. Belton, Jones Metropolitan High School
A lesson designed to teach students to recognize the symbol for set and to demonstrate the rules for sets. From the "Miscellaneous" section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative for Learning Enhancement.
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 Introduction To Solving Equations (SMILE)  Mary Lynn Bochenek, Central Junior High School
A lesson designed to teach students to arrive at an equation of the form X = [ ] in which the variable is isolated and the solution is then obvious through use of equivalent equations. From the Algebra and Trigonometry section of a collection of almost
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 An Introduction To Volume (SMILE)  Linda James Woods, Harold Washington Elementary School
A lesson for grades 35 designed to teach students about volume, using a variety of containers, potting soil, popcorn, etc. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the Science and Mathematics Initiative
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 Investigating LCM and GCF Using Rods  Margo Lynn Mankus
The objective of the lesson plan Investigating LCM and GCF Using Rods is to look at the Least Common Multiple (LCM) and Greatest Common Factor (GCF) from "handson" patternbuilding to using set theory. With teachers as the intended audience, the activity
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 Investigating Patterns: Symmetry and Tessellations  Jill Britton
Thirty activities from a variety of Web sites, coordinated with a forthcoming book by Jill Britton for Cuisenaire/Dale Seymour, Exploring Pattern: Symmetry and Tessellations (March 1999). Topics include an introduction to symmetry; symmetry in the alphabet,
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 Investigating Tessellations Using Activity Pattern Blocks  Suzanne Alejandre
A lesson plan with activities for investigating tessellations with pattern blocks, keyed to the NCTM Standards, and student tessellation samples. Links to a Patterns Program in which you can drag an unlimited number of standard pattern block shapes into
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 IsoDraw  Mervin Bitikofer
IsoDraw is downloadable freeware for Windows machines that allows students to play on a drawing space with polygons and various isometries. They can place and move multiple reflection lines on the screen, and watch the effects of translations and rotations.
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 Isotiles  John Everett
Isotiles are specially designed tiles, in just two triangular shapes, by
which a wide range of topics in geometry can be studied. Topics include: different types of angles; lines and angles; angles of a triangle; isosceles triangles; similar triangles;
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 It's About Time (SMILE)  Vernita Smith, Mahalia Jackson Elementary School
A lesson for grades 12 designed to teach students to tell time to the hour on an analog clock, and how to compare more and less time. From the "Miscellaneous" section of a collection of almost 200 single concept lessons by the Science and Mathematics
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 Jaap's Scratch Pad  Jaap Scherphuis
Java applets, generators, and solutions for sudoku, Rubik's Cube, "moving pieces" puzzles, permutation puzzles, and more, including sphere symmetries, polyform, Towers of Hanoi, and many lesser known puzzles from this collector. Scherphuis' articles range
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 Japanese Temari  Barb Seuss
Read about the history of this Asian needlework craft, find free patterns to stitch your own geometric designs on the sphere, browse online galleries of temari, and more.
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 Jim Plank's Origami Page (Modular)  Jim Plank
Instructions for making polyhedra, and pictures  "Penultimate Module": Compound of 5 tetrahedrons; Compound of 5 octrahedrons; Compound of three rectangular prisms. Stella Octangula. Lesser Stellated Dodecahedron. Snub Cube, Dual of the Snub Cube. Icosidodecahedron
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 Join the Dots: a Math Line Puzzle  Math Forum
Can you connect 9 dots laid out 3x3 using 4 straight lines, without lifting your pencil from the paper? Questions, hints, solution.
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