Everything you need to understand or teach Time's Eye by Arthur C. Clarke.
Time's Eye by Arthur C. Clarke is a fantastic tale told in six parts about an intelligent and ancient group of beings that have been around since the universe was in its infancy. Watching their star burn itself out, they realize that they are headed towards eventual and total darkness. This causes them to rethink the significance and importance of life itself and in an effort at preservation, the "Firstborn," as they are christened by those left on Earth, take drastic action. Sampling several cross sections of time and life, the Firstborn cause space to collapse on itself and reassemble Earth with only the samples they have selected. This "Discontinuity" brings together a diverse group from varying time zones, with unpredictable consequences. The Firstborn believe that life itself is so important that it is acceptable to sacrifice some of it in order to save the remainder.
Time's Eye Lesson Plans contain 126 pages of teaching material, including: