Science Literacy and Science Standards

摘要

Those who carefully evaluate science literacy report that it has doubled over the past two decades,but nevertheless fewer than a quarter of Americans are currently what expert Jon D.Miller calls,"scientifically savvy and alert" (1).Fewer than one-third of Americans can identify DNA as a key to heredity,only about 10% know what radiation is,one in five thinks the Sun revolves around Earth,and most do not understand what a molecule is (though they can say that it is really small).