Describes the development of various systems of measurement, from early methods using parts of the body, to maps and map scales, gravity, light years, and modern balances and scales.
Surveys the history of communication throughout the ages, including signs and symbols, letter writing, the telegraph, the telephone, radio, television, and computers.
Presents an overview, from ancient times to the present, of the evolution of writing including the development of alphabets, writing instruments, inks and papers, and printing methods.
Presents an overview of the use of numbers, from ancient times to the present, including the development of number systems, counting methods, mathematics, and counting machines.
