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CHARLOTTE, N.C. _ Want to know what's in science textbooks your children may have used? How about: A map depicting the equator passing through the southern part of the United States? The incorrect formula for the volume of a sphere? And the following contradictions within 12 pages of each other: "Sound travels faster through warm air than cold air" and "Sound travels faster in colder air"?
Those and hundreds of other errors were discovered in a dozen middle school science textbooks during a two-year study released earlier this month, led by a North Carolina State University researcher. The worst textbooks, the researcher said, are a series that several Charlotte-area school systems used during the past five years.
"These are terrible books, and they're probably a strong component of why we do so poorly in science," on standardized tests,…