This presentation will engage participants in three types of related mathematical activities: posing problems, making conjectures, and solving problems in geometric contexts with the help of dynamic geometric software, Geometer's Sketchpad and Cabri geometry. Presenters and participants will also reflect on how we can enhance students' abilities to pose problems, makeconjectures, and solve problems in a technology environment. TI-92 calculators and handouts will be provided. A lab of Macintosh computers will be available. 

Jose N. Contreras (jcontrer@ocean.st.usm.edu)
The University of Southern Mississippi, Hattiesburg, Mississippi

Armando M. Martinez-Cruz
Northern Arizona University, Flagstaff, Arizona

Presider: Kathy Layton, Beverly Hills High School, Beverly Hills, 
California

This session will offer ideas for how elementary teachers can use the web to find materials appropriate for use in their elementary classrooms (lesson plans, teaching ideas). The session will also discuss how teachers can involve elementary students in using the web for finding and solving problems and doing projects and research. Handouts of useful web sites will be provided. The session will include discussions about activities that can be done on each site as well as samples of student work. This session is intended for teachers who feel that they and their students are beginners in using the Internet. 

Janet Teeguarden (jteeguarden@depauw.edu)
DePauw University, Greencastle, Indiana 

Sheryl Teeguarden Riley
Glendover Elementary School, Lexington, Kentucky

Presider: Lawyer L. Gee, O. L. Wicks Elementary School, Maben, Mississippi
 

10:30 am - 12:00 noon

Session 1038 - Macintosh Lab (Moscone 110)
Using the Geometer's Sketchpad with Middle School Students - Activities and Projects
Middle School (5--9) Workshop (Admission by Ticket)

The Geometer's Sketchpad, an interactive software program, offers a tool that greatly expands the opportunities for the teaching of geometry. While the software has traditionally been used in a high school setting, this session will focus on appropriate and successful ways in which teachers are using Sketchpad with middle school students. The presenters wish to demonstrate the capacity of dynamic software to motivate middle school students and to increase their mathematical power through the investigation, acquisition, synthesis and application of concepts.

Karen Wyatt (wyattk@mtnbrook.k12.al.us)
Mountain Brook Junior High School, Birmingham, Alabama 

Presider: Ann Lawrence, PBS Mathline, Alexandria, Virginia

This session focuses on the use of a computer program, Non Euclid, a model for hyperbolic geometry, to teach geometry in a college course. Participants complete a series of exploration activities using Non Euclid that will familiarize them with the features of the program and introduce them to contrasts between hyperbolic and Euclidean geometry. Participants will share the results of their specific investigations and any other observations they may have made. Handouts will include the historical information about Euclidean, hyperbolic, and elliptical geometry, the exploration activities, and information about how to obtain Non Euclid for your school.

Barbara W. Grover (bgrover1@ohiou.edu)
Ohio University, Athens, Ohio 

Presider: Jeffrey Connor, Ohio University, Athens, Ohio
 

12:30 pm - 2:00 pm

Session 1122 - Macintosh Lab (Moscone 110)
But What If. . .?  Using Spreadsheets to Analyze Real-Life Data
Middle/High School (7--12) Workshop (Admission by Ticket)

The area of statistics/data analysis has long been neglected at the K-12 level. With the advent of computer technology, specifically spreadsheets, students can get past the barrier of data manipulation to a point where they can put meaning to real-life data. Open ended, "what if" questions can be posed and easily answered as students use spreadsheets to alter their own data and see resulting implications. Sources of Internet data will be distributed, along with instructions on how to download that data directly into spreadsheet software. Website: http://www.cotf.edu. 

Jeanne Gasiorowski Finstein (jeanne@cet.edu)
NASA Classroom of the Future
Wheeling, West Virginia

We will report findings and experience in using an intelligent and interactive software-based learning environment (http://www.edutron.com). This Student-Centered Learning Environment for Algebra I (Introductory Algebra) is based on a "Triple Helix+" model: Triple Helix+ = Concept + Skill + Problem-Solving plus communication. It provides exploration, concepts and basic skills as well as various application components. Student learning efficiency is monitored in detail; the results form the basis for an analysis on whether the use of computer and Internet improves student achievement. Issues related to teacher preparation and student assessment will also be addressed. 

George L. Johnston (glj@zone.ultranet.com)

Kenneth J. Najjar
Maynard High School, Maynard, Massachusetts
Kirk Peiffer
Concord-Carlisle High School, Concord, Massachusetts
Susan Reap
Concord-Carlisle High School, Concord, Massachusetts
Donna Desimone
Bunker Hill Community College, Charlestown, Massachusetts
Andrew S. C. Chen
EduTron Corporation, EduTron Corporation
 

2:30 pm - 4:00 pm

Session 1198 - Macintosh Lab (Moscone 110)
By the Numbers and at Work!  Mathematics Within a Functional Context for High School to Adult Learners
High School/College (11--16) Workshop (Admission by Ticket)

Participants in this session will be introduced to By the Numbers and At Work!, two educational software products.  By the Numbers is a web site which simulates common situations (such as purchasing an automobile) that require an understanding and an application of consumer mathematics. At Work! is software that simulates an office work environment to assist youth in making the transition from school to work. Both produces were developed under the US Department of Education's SBIR program. Preview at http://www.kindermagic.com.

Ilse Ortabasi (ortabasi@aol.com)
Kinder Magic Software, Encinitas, California 

Presider: Gloria Johnson, Hospital/Homebound School, Orlando, Florida

How to create and use embedded formulae in spreadsheets to demonstrate mathematical relationships.  A classroom simulation which postulates examples, charts and sorts results, and seeks a pattern.  Handouts taken from Microsoft Excel with references to Lotus 1, 2, 3. Related non-technical "hands-on" activities and "real-world" extensions.

Nancy Carwile (ncarwile@pen.k12.va.us)
GovernorÕs School for Global Economics and Technology, Keysville, 
Virginia