High School Science Teaching Aids Prepared by Bell Telephone
Laboratories
Classroom units including books, motion pictures, and demonstration
devices:
_Similarities in Wave Behavior_
_Ferromagnetic Domains_
_The Speech Chain_
Bell System Science Experiments for the advanced student:
_From Sun to Sound_
_Solar Energy Experiment_
_Speech Synthesis_
Information about these and other materials is available to teachers
from local Telephone Company business offices