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Topic: Newsletter: Math Forum Internet News No. 2.32 (Aug. 11)
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Sarah Seastone

Posts: 1,240
Registered: 12/3/04
Newsletter: Math Forum Internet News No. 2.32 (Aug. 11)
Posted: Aug 9, 1997 4:13 PM
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11 August 1997 Vol.2, No.32

THE MATH FORUM INTERNET NEWS

Geometry Turned On | Geoboards | Flash Cards for Kids


GEOMETRY TURNED ON: DYNAMIC SOFTWARE
IN LEARNING, TEACHING, AND RESEARCH

Edited by James King and Doris Schattschneider

http://forum.swarthmore.edu/dynamic/geometry_turned_on/

This book contains 26 papers about aspects of dynamic
software for geometry. The book does not itself include
software, but downloadable files for many of the papers
are available from the Web site. The editors write:

"Although this volume is printed in a conventional
manner, with illustrations in every article, most
of the illustrations beg to be played with. You will
read descriptions of how certain configurations behave
when manipulated, but not be able to tweak the diagram
on the printed page. We want you to be able to
experience some of the explorations described by our
authors. To make that possible, dynamic sketches that
use Geometer's Sketchpad or Cabri II have been made
available by several of the authors and are posted on
this Web site maintained by the Math Forum."

The book's major headings are:

- Personal Reflections on Investigation, Discovery, and Proof
- Making Geometry Dynamic in the Classroom
- Dynamic Visualization in History, Perception, Optics,
and Aerodynamics
- The Worlds of Dynamic Geometry: Issues in Design and Use

The Math Forum offers demo versions of the Geometer's
Sketchpad and Cabri, along with directions for setting up
your Web browser to use them as helper applications:

http://forum.swarthmore.edu/dynamic.html


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GEOBOARDS IN THE CLASSROOM - TOM SCAVO

http://forum.swarthmore.edu/trscavo/geoboards/

Even secondary school students sometimes have trouble
distinguishing between perimeter and area, or understanding
units like in^2 (square inches). These new Web pages for
teachers offer suggestions for using the geoboard to explore
the length and area of two-dimensional geometric figures.
With geoboards, students can see square units and are more
likely to count them to estimate area, so 'square unit'
takes on a whole new meaning.

Tom's Introduction for teachers includes pages that
describe the materials needed, discussion and activities
for investigating length and area (in particular Pick's
Theorem), and sample pages of dot paper to print out.
Five lesson plans focus on:

- Lines
- Squares
- Rectangles
- Parallelograms
- Right Triangles

and a short Bibliography rounds out the unit.

For other Web resources by Tom Scavo, see Tom's Math Lessons:

http://forum.swarthmore.edu/trscavo/index.html


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FLASH CARDS FOR KIDS - J. M. IVLER

http://www.wwinfo.com/edu/flash.html

A page set up to help kids learn basic math skills while
on the Internet. When you figure out the answer to a problem
posed by the program, enter your solution in the box and
press the button that says "That's the answer!" If you're
right, you'll see, for example, "Correct: Your last answer
was: 7 * 7 = 49." If not, you might see: "Almost: Sorry,
the expression 2 * 1 * 4 * 4 * 1 * 7 * 8 * 3 * 2 calculates
to 10752. Let's try another."

Choices include Addition, Subtraction, Multiplication,
Division, and Addition and Subtraction, with three options
for number size (0-9, 0-99, and 0-999), and two levels of
complexity:

- Simple: two numbers (in "Addition and Subtraction"
there are three numbers)
- Complex: up to 10 numbers

The program can keep score of your responses to 100 attempts.
The page and the program were developed for K-12 students
for a 'tech day' at Tomas Rivera Elementary School in
Riverside, California.


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CHECK OUT OUR WEB SITE:

The Math Forum http://forum.swarthmore.edu/
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The Math Forum ** 11 August 1997

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and subscription directions archived at

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