Scientists Dr. Roger Payne and Dr. Katherine Payne have discovered that the use of infrasonic sounds is a method of communication used by whales. Using this prior knowledge, Dr. Katherine Payne observes elephants and determines that elephants also use infrasound to communicate. (McGraw-Hill Open Court, 2002)

This lesson was created as part of the Basal Alignment Project, during which teachers created CCSS-aligned lessons for existing literary and information texts in basal readers. All page numbers and unit/week designations found in this lesson relate to the edition of the basal reader named above. If you are using a trade book or different edition of this title, the page/unit/week references in this lesson will not match. Consult the content referenced in the body of the lesson to determine appropriate page numbers for your text.