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 Lesson Plans: Arithmetic
This list contains some of the best sites for
individual arithmetic lesson plans or materials on which to
base them. For a more exhaustive list, or to find
materials that fit your specific needs, search or browse
Arithmetic/Early Math
or Lesson
Plans in the Forum's Internet Mathematics Library.
 Adventures in Statistics
- Scavo, Petraroja
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A Web unit preprint of a paper by teachers Tom Scavo and Byron Petraroja that describes a mathematics project involving fifth grade students and the
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- Algebra - Fun with Calendars
- Cynthia Lanius
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Take any calendar. Tell a friend to choose 4 days that form a square. If your friend tells you only the sum of the four days, you can tell her what
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- Bricks Activity
- Suzanne Alejandre
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A classroom activity (also called the Masonry Problem; a variation on polyominoes) aligned to the NCTM and California Standards, to be explored
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- Classification of Patterns
- Brown-Herbst, Donnelly, Stratton, Anderson-Nielsen; The Geometry Center
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Materials about symmetry and classification of repeating patterns for students in grades 7-10 using wallpaper patterns, to be used as either an
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- Does the Number e have Special Meaning?
- Spencer, Chan; Univ. of Toronto Mathematics Network
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Answers, explanations, and expositions of the question, Does the number e have any real physical meaning, or is it just a mathematical convenience?
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- Dominoes Activity
- Suzanne Alejandre
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A classroom activity (similar to Pentomino + 1 = Hexomino; a variation on polyominoes) aligned to the NCTM and California Standards, to be explored
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- EggMath
- Bradlow, Sullivan, Levy, UIUC
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A collection of modules (including many interactive applets) for K12 classrooms, based on the theme of eggs. Topics include: the shape of an egg
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- Fractals: Definition & Activities
- Suzanne Alejandre
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A Math Forum Web Unit. Includes definitions and descriptions of fractals, links to pages on the Sierpinski triangle, the Koch edge, the Peano curve,
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- Geometric Factoring
- Suzanne Alejandre
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A Math Forum Web Unit. Understanding factoring through geometry: students work cooperatively to display a numeral as the area of a rectangle, and make
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- The Golden Ratio
- Blacker, Polanski, Schwach; The Geometry Center
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Introduction to the Golden Ratio and Fibonacci Sequence. Instead of simply supplying definitions and asking the student to engage in mindless
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- The Hand Squeeze: A Data Collection and Analysis Class Experiment
- Cynthia Lanius
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An experiment: measuring the amount of time that it takes for a hand squeeze to pass around a circle. Record, graph, and analyze the data, and make
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- Hotel Infinity (MegaMath)
- Nancy Casey; Los Alamos National Laboratory
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Will a hotel with an infinite number of rooms always have a vacancy? Students develop number sense, use numbers and number relationships in
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- How Many Different Paths
- Karen Wheeler; SCORE Mathematics
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A discrete mathematics lesson for working on addition and multiplication skills, with connections to counting, adding, multiplying, and Pascal's
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- Introduction to Fractions for Primary Students
- Varnelle Moore
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A Web unit designed to introduce young children (K-2) to beginning concepts in fractions: equal parts, divide and shade, parts to whole, and writing
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- Introduction to Measurement for Primary Students
- Varnelle Moore
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A Web unit designed designed to engage young children in a series of activities where they measure and describe the attributes of integer bars:
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- Locker Problem
- Suzanne Alejandre
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A classroom activity (also called 1000 Lockers) aligned to the NCTM and California Standards, to be explored through the use of manipulatives and a
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- Machines That Eat Your Words (MegaMath)
- Nancy Casey; Los Alamos National Laboratory
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An introduction to the concept of finite state machines, and how they are used to design computer systems that will recognize patterns. A finite state
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- Magic Squares: Math, History, Geography
- Suzanne Alejandre
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Designed primarily for middle school and older elementary school students, this Math Forum Web unit includes classroom activities for four different
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- Mathematics of Cartography
- Cynthia Lanius
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A map is a set of points, lines, and areas all defined both by position with reference to a coordinate system and by non-spatial attributes. These
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- The Million $ Mission
- Cynthia Lanius
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You have your choice of two payment options on your new job: 1. One cent on the first day, two cents on the second day, and double your salary every
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- No Matter What Shape Your Fractions Are In
- Cynthia Lanius
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Students explore geometric models of fractions and discover relations among them, reinforcing their knowledge of fractions by using online pattern
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- Pascal's Triangle
- Math Forum/USI
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A Web unit designed to support workshops given by the Math Forum for the Urban Systemic Initiative (Philadelphia and San Diego). Read about the
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- PlaneMath
- InfoUse, in cooperation with NASA
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Materials for elementary school students about math and aeronautics, designed to stimulate and motivate students with physical disabilities in grades
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- Rectangle Pattern Challenges
- Cynthia Lanius
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Examine different stges of rectangle patterns, and describe what you must do to get from one to the next. Observe the designs looking for patterns.
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- River Crossing (Math Exploration Quilt)
- Rik Littlefield; Hanford School
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You want to cross a river to reach a point exactly opposite where you are currently standing. Explore this problem step-by-step, encountering the
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- Table-Top Earthquakes
- John C. Lahr
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A demonstration of seismology for middle-school teachers and students that can be used to augment lessons in earth science (faulting, elastic rebound,
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- Traffic Jam Activity
- Suzanne Alejandre
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A classroom activity (also called Hop, Skip, Jump) aligned to the NCTM and California Standards, to be explored through large movement experience,
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- The Twelve Days of Christmas and Pascal's Triangle
- Judy Brown, DIMACS and The Math Forum
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A lesson in which, using Pascal's triangle, students find the number of items given each day in the song, "The 12 Days of Christmas."
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- The Twelve Days of Christmas
- Judy Brown, DIMACS and The Math Forum
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A lesson in which students find the number of items given each day in the song, "The 12 Days of Christmas." This project is designed to be used as a
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- UBUYACAR
- Maricopa Center for Learning and Instruction
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An online problem-based learning manual for students that poses the question: "You are interested in purchasing a new vehicle. What should your annual
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- For more, search or browse
Arithmetic/Early Math
or Lesson
Plans in the Forum's Internet Mathematics Library.
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Arithmetic Lesson Plans
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