3-DIMENSIONAL TOPOGRAPHIC MODELS OF GEOLOGIC FEATURES IN THE CLASSROOM

We are using topography data of Earth and Mars to produce accurate 3-dimensional plastic models of comparable large scale geologic surface features from both planets. These models will be used in instructional settings to help students gain a better understanding of topics related to comparative geology, geomorphology and topography. The models are innovative in that they will provide students with a tactile representation of the three-dimensional character of a planetary surface, which is often difficult to visualize from 2-dimensional maps. Along with the models, associated lesson plans are being designed to help students and teachers understand topics related to topography such as scale, shape, landform evolution, contour, slope, and exaggeration.

Several model kits based on specific science themes will be produced over the next year. Initial models and lessons are focusing on model pairs of similar features on Earth and Mars including: large volcanoes, canyons and polar ice caps. Each of these kits will include: relevant 3-dimensional models, descriptive text, 2-dimensional maps and images, lessons and suggested classroom activities that are aligned with the National Science Education Standards (NSES) and Benchmarks. For initial testing the kits will be evaluated by a group of middle school science teachers who are taking masters level course work in the Masters of Science in Education Program at Johns Hopkins University. These teachers will test these kits in the classroom and provide feedback and suggestions for improvement.

To reach a broader community, web based versions of the kits are also being planed. In lieu of the actual 3-dimensional plastic models these web sites will use interactive topography data visualization tools using QuickTime virtual reality or Macromedia Flash technology that will allow students to rotate and view the geologic features from many angles. Web based interactive visualizations and exercises dealing with other common topography measurement parameters such as slope, contouring and vertical exaggeration will also be produced. These web based exercises can be used independently or as a supplement to the plastic model kits.