JEdI ACTIVITIES SUMMARY
By James D. Sproull, Editor

This activity book is designed to introduce you and your students 
(investigators) to some of the datasets, images, and programs 
which are available on the three JEdI discs.  No attempt has been 
made to address all of the datasets nor cover a dataset 
completely.  This activity book is the beginning of an ongoing 
and continuing teacher activity resource book which will reflect 
the input of teachers conducting science education with CD-ROM 
datasets

Introduction to the Activities

Each activity has an abstract which describes the scope of what 
the activity is intended to accomplish.  In this section is a 
short description of some of the skills developed through the use 
of an activity.  Each one of these activities will develop some 
skill or skills which will enable the investigator to advance to 
a higher level of data base acquisition or image processing.

Developing a Physiographic Map of North America

This is an excellent introductory activity to become familiar 
with the GNA program.  After using a tutorial, this activity 
demonstrates the imaging and profiling capabilities of GNA.

Modeling Coastal Flooding

In addition to conducting coastal flooding scenarios, this 
activity demonstrates how a color palette can be changed and 
used.  By changing the way the computer images topography, the 
investigator changes the way features are perceived.

Biomes:  Detecting Vegetation Through Remote Sensing

Investigators use remotely sensed vegetation indices.  These 
vegetation indices are analyzed and then modified.  Used with 
AVHRR imagery this will introduce students to remotely sensed 
images, how they can be enhanced, and what these images show.

A Comparison Between Topography and Gravity Anomalies

Illustrates how to use the powerful profiling feature of GNA.  
Topographic and gravity profiles are created, compared and 
analyzed.

Changing Levels of Ozone in the Atmosphere

This activity shows how ozone data can be applied to maps. 
Isolines are drawn for Dobson units, which reinforces the use of 
isotherms and isobars.

Earthquakes: Interpreting First Motion from Seismograms

Investigators discover the use of first motion spheres in seismic 
studies.  Knowledge of seismograms and earthquake motions will be 
applied to maps and analyzed for their effects upon the land's 
surface.

Temperatures/Salinity Profiles of the Pacific Ocean

This dataset provides investigators the ability to access Pacific 
Ocean salinity and temperature data.  The program's graphing 
routine allows these data to be displayed in an understandable 
and usable format.

Identifying Atoms and Molecules in Comets

In addition to two comet spectra, a calibration spectrum is 
provided.  The investigator can access, analyze, and compare 
spectra of comets to known elements.

Antarctica: Three Views

The investigator will be able to study Antarctica with three 
different satellite views.  A unique feature of this activity is 
the access and study of the mosaic of the entire continent and 
the analysis of sea ice data.

Enhancing Voyager Images

This activity introduces the investigator to powerful image 
processing and display tools.  Two programs, IMDISP and PCMIPS, 
are used to view Io, one of Jupiter's moons, and to enhance and 
analyze its features.

Sea Floor Features from the GLORIA Project

This activity demonstrates how imagining techniques can be used 
to enhance underwater features.  Using sonographs, features in 
the Gulf of Mexico are enhanced, measured and mapped.