indicators and most certainly on their definition. It was clear from the subgroup’s interaction that such indices were considered important and likely to be of great interest to national and local leaders, as well as the public. The subgroup felt that travel time, reliability, and economic costs should be incorporated into measures of mobility.
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3 Mobility Indicators ."
Key Transportation Indicators: Summary of a Workshop . Washington, DC: The National Academies Press,
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As of 2013, the National Science Education Standards have been replaced by the Next Generation Science Standards (NGSS), available as a print book, free PDF download, and online with our OpenBook platform.
The NGSS offer a detailed description of the key scientific ideas and practices that all students should learn by the time they graduate from high school. The standards are based largely on the 2011 National Research Council report A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas.