A 24-page manual provides principals, educators, and other school personnel with factual information about sexual orientation development, important legal principles they must consider, and problematic efforts to change sexual...

Defines inertial and gravitational mass, their scientific history, formulas used in their calculation, the definition of weight, units used for mass, and mass as perceived in the theory of special relativity.

Excellent in-depth biography of Daniel Bernoulli's life and scientific accomplishments. Information on Bernoulli's family, education, and major works is included. Also includes links to information on other scientists and mathematicians.

A key turning point in a nation's economic development is when it starts to use its resources for long term versus short term purposes. A natural resource example is trees: should people use wood for cooking food or building homes?...