W. R. Krickenberger

This book was published in 1944 for the United States Armed Forces Institute, Educational Services Section, Training Division, Bureau of Naval Personnel, Navy Department, Washington, D.C.

It is a course in solid geometry that was prepared so that the reader can do the work without the assistance of a teacher.

In my opinion, this self-teaching text for teaching solid geometry is as good as, perhaps even superior to, the programmed learning texts that followed the behavioral model of "frames" show more proposed by B. F. Skinner in the 1950s and '60s. show less

The good thing about math texts is that when you think your mind needs refreshing, you can pick one up and work some of the problems.

A high school solid geometry textbook covering three-dimensional geometric forms including lines, planes, polyhedra, spheres, and related theorems and proofs. Revised edition published 1950 by Ginn and Company.