Major Topics and Objectives
1A.  EARTH’S SHAPE
        What is known about Earth’s shape and how do we know about its shape?

1B.  EARTH’S SPHERES
        What are the three Earth spheres and their characteristics?

1C.  MAP PROJECTIONS, LATITUDE, LONGITUDE, & TIME
        How can we determine locations on Earth?

1D.  INTERPRETING FIELDS & TOPOGRAPHIC MAPS
        How are surface features of the Earth mapped?