The World Wide Web opens interesting possibilities for
educational materials through its combination of hypertext, interactivity,
multimedia, and communication at a distance, particularly since users can
construct their own Web contributions. The Math Forum is committed to being
a resource built upon the activity of the teachers, students, and researchers
who use it.
We have experimented with the use of the Web for instruction and with involving
Forum users in the creation of materials for the Internet classroom.
Here are some examples:
"Adventures in Statistics"
A preprint of a paper by teachers Tom Scavo and Byron Petraroja to appear in
"Teaching Children Mathematics," which describes a mathematics project
involving fifth grade students and the area of classrooms, including measurement,
graphing, computation, data analysis, and presentation of results.
Algebra and Calculus via
Sketchpad
Exploring equations for lines, parabolas, and tangents using the Geometer's
Sketchpad. By Forum Teacher Associate Ruth Carver.
Building Models of Surfaces
The Forum is interested in the use of physical models as aids in understanding
3Dimensional surfaces. Swarthmore College student Joan Hoffmann has created
some howto pages for building surfaces that appear in multivariable calculus.
Chameleon Graphing
Two Web units by Ursula Whitcher, introducing The
Coordinate Plane for elementary and middle school students, and
Lines and Slope for middle and early high
school students. With the help of Sam the Chameleon, learn to find points on
a number line and graph points in the coordinate plane; then graph lines
and learn to visualize slope with Sam's sister, Joan.
Exploring Data
Pages for finding and displaying data sets, designed to support workshops on
statistics given by the Math Forum for the Urban Systemic Initiative. Included
are: links by level to relevant statistics Standards; lesson plans for collecting,
analyzing, and/or displaying data; sources of data sets, general information,
courses, and statistics software on the Web; and an "Oceans of Data" page with
a data set (diving records) to download, instructions for making a ClarisWorks
or Excel graph, suggested questions for discussion, and related 'ocean links'
(NOAA, SeaWifs, tide tables).
Factoring Through Geometry & Algebraic
Factoring
A collection of lessons on factoring from Forum Teacher Associate Suzanne
Alejandre. Using algebra tiles, students find a geometric basis for factoring
and connect this to the familiar algebraic process. Also
Designs With Circles:
the geometry and harmony of circles.
Famous Problems in the History of Mathematics
History of mathematics presented through some famous problems, with
exercises and their solutions. The problems include "The Bridges of
Konigsberg", "Famous Paradoxes", and "The Problem of Points."
Geoboards in the Classroom
A unit for teachers from Tom Scavo that offers suggestions for using geoboards
to explore the length and area of twodimensional 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.
Geometry
Through Art
Lesson ideas, facilitation suggestions, lists of materials needed, and
handouts to photocopy. Artist/Educator Norman Shapiro focuses on the student as
investigator, learning through doing, and using perception to stimulate the
motivation for more developed concepts and language. Art is one of the
intrinsically interesting applications of geometry and these pages provide a
wonderful way in to this topic for children and adults alike.
Introduction
to Vectors
Supplementary material to help students with their first encounter with
vectors, and an experiment in the pedagogical possibilities of the WWW which
allows nonlinear use of documents of all types, and of Geometer's Sketchpad,
which has internal possibilities for unveiling, animating, and tabulating,
in addition to its dynamic capabilities. From Gene Klotz, Director of the Math
Forum.
Limits
An experiment in using the World Wide Web to illustrate the intuitive notion
of limits in functions of two variables. Written by Gene Klotz and
Swarthmore College student Ethan Magness.
Magic
Squares
This unit by Forum Teacher Associate Suzanne Alejandre is designed for
middle and older elementary school students, and includes classroom
activities for four different squares: Lo Shu, Sator, Dürer, and
Franklin, demonstrating number complexity and symmetry. Links and
suggestions for history, geography, and writing activities for teachers
interested in interdisciplinary work are included.
Math to Build On
Johnny and Margaret Hamilton's book covers much of the basic math used in
the construction trades and gives us practice in its application. We offer a
few sections to show some possibilities for alternative introductions to
these fundamental concepts.
Pascal's Triangle
A Web unit designed to support workshops given by the Math Forum for the
Urban Systemic Initiative. Read about the history of Pascal's triangle and
learn to construct it; see number patterns to be discovered; carry out
interactive investigations in Java script or the Geometer's Sketchpad,
and explore this famous triangle through lesson plans that feature questions,
answers, discussion, and student worksheets.
Perspective
Drawing, Moebius Strip, Polyhedra, and Spreadsheets
Mathematics and ... (art, things to make, spreadsheets) from Jan Garner.
Polyhedra in the Classroom
This unit by Suzanne Alejandre introduces the concepts of surface area and
volume while focusing on the importance of measurement. Students calculate
the surface area of a rectangular prism; name the characteristics (number of
edges, faces, vertices, and the shape of the face) of 6 specific polyhedra
(cube, tetrahedron, octahedron, dodecahedron, icosahedron, and
cuboctahedron); demonstrate their understanding of the characteristics of
polyhedra; and explore polyhedra in the real world through crystalline
structures and 'buckyballs'. All objectives are coordinated with the NCTM
Standards.
Primary Math Activities  Varnelle Moore
Lessons designed to engage young children in math activities. Interactive, manipulativebased projects, technology, paper/pencil practice, literature connections, and teacher support extension ideas are included in each unit. See Introduction to Geometry and Introduction to Measurement, with beginning concepts in geometry (describing shapes, making patterns, building shapes, rotational symmetry, and line symmetry), and Introduction to Fractions.
Regular Tessellations
Suzanne Alejandre at the Math Forum has developed a middle school lesson using BoxerMath.com's Tessellation Tool Java applet to help students understand why equilateral triangles, squares, and regular hexagons tessellate regularly in the Euclidean plane. In addition to alignment to NCTM Standards and a stepbystep guide, the Teacher Lesson Plan links to Math Forum resources such as: Information and Lessons, Problems of the Week, Teacher2Teacher, and Ask Dr. Math. A Student Page is also available.
Secondary
Math Units
These pages by Margaret Sinclair provide units for grades 910: Data Collecting
in the Classroom, Algebraic Problemsolving using Spreadsheets (a unit that
emphasizes moving from numerical to symbolic representation), and a newspaper
review unit on the Skydome; and grades 1112: Three Days in the Lab (Sketchpad
assignments for seniors when lab time is short); Linear Transformations using
Spreadsheets; Show and Tell for Big Kids (investigating math using computers
when you have limited lab time); and Investigating Functions Using Spreadsheets
(with an emphasis on Microsoft Excel).
Tangent Planes
An experiment in using the World Wide Web to illustrate the intuitive notion
of the tangent plane to a graph of a function of two variables. Written by
Math Forum Director Gene Klotz and Swarthmore College student Ethan Magness.
Tangrams
A unit by teacher Tom Scavo for grades 4 through 6 that uses tangrams to compute the area of polygons without employing formulas. The terms 'congruent' and 'similar' are introduced, and students construct their own tangrams, find
the areas of tangrams, and learn to calculate the area of any polygon
constructed from tangrams.
Tessellation
Tutorials
A series of tutorials by Forum Teacher Associate Suzanne Alejandre that
teach students how to tessellate (somewhat in the style of
M.C. Escher) using HyperCard or HyperStudio, ClarisWorks, LogoWriter,
templates, or simple straightedge & compass. These tessellation
lessons include units incorporating rotations and glide reflections, a section
called "Where's the Math"
that elaborates on some underlying geometric principles, Historical
and Geographical Connections, comments
contributed by others who have enjoyed using this tutorial, and samples of student work.
