|You can draw straight lines on the globe. This
is usually hard to do. You can't use a ruler on a curved
surface. However, your globe sits in a cradle that has a ring
around it. This ring is the Horizon Ring.
Because your globe sits halfway on this cradle, you can draw a
straight line from one place to another.
A straight line on a globe is important because it shows true
The picture below shows how you can use the globe and the
mounting to do this.
Circle any two cities,
say Chicago and Moscow.
Place your left thumb on Chicago and
your right on Moscow.
Move the globe forward until
Chicago and Moscow are even
in the Horizon Ring.
Draw a line, using the Horizon Ring as a
straight edge connecting the two cities.
Lesson .pdf file (Printable Lesson)
Return to Lesson Plans Table of
Copyrighted Property Of George F. Cram