Like many great institutions in Philadelphia, the Academy of Natural Sciences has a long and storied history. The Academy was started in 1812, and in no time at all, the members of this institution were making...

Created by Lang Moore and David Smith for the Connected Curriculum Project, the purpose of this module is to study the process of moving from rate-of-change information to cumulative change; to relate this process to...

Created by Lang Moore and David Smith for the Connected Curriculum Project, this is a module to study the process of moving from rate-of-change information to cumulative change; to relate this process to area...

Due to the presence of dissolved gases such as carbon dioxide, rainfall is naturally acidic. The release of other gases and chemicals such as sulfur dioxide during the combustion of coal and oil can cause rainfall to...

Stephen Lower of Simon Fraser University presents this site on a visual approach to acid-base problems. Lower says that although he still finds it important to teach students to solve acid-base problems algebraically,...