Hudak, Heather C.

"This ... title introduces readers to the concept of a wave and the patterns and properties common to both light and sound waves. Clear text and detailed diagrams combine to demonstrate the cause-and-effect relationships involved in the properties of amplitude, wavelength, and frequency. A link to interactive activities online plus an activity in the book allow readers to explore key concepts close up by creating their own wave models."--.

"In this ... title, readers explore how light and sound waves transfer information. From telescopes that extend our sense of sight to satellites that help us communicate across large distances, patterns of waves transfer information in many ways. A link to interactive activities online plus an activity in the book allow readers to use what they have learned about waves to engineer wave patterns that communicate across distances."--.

"Sahar misses her life in Yemen before the terrible civil war started. When her home is bombed and she loses her baby brother, she and her family make the dangerous boat journey to a refugee camp. Sahar and her family end up journeying to Canada as refugees, where they adjust to a very different life. Interspersed with facts about Yemen and its people, this narrative tells a story common to many refugees fleeing the country. Readers will learn about the conflict there and how they can help refugees in their communities and around the world who are struggling to find permanent homes"--Provided by publisher.

An introduction to the sport of BMX biking that covers equipment, competition qualification, tricks, stars, and other related topics.

Discusses the childhood and early life of Sam J. Porcello and traces his work at Nabisco, including his successful attempt to improve the filling of Oreo cookies.

Examines World War technology used on the land, air, and sea.

Describes the technology used during the Vietnam War including different types of vehicles, artillery, explosives, chemical warfare, and more.

Unwraps the life of hot dog manufacturer Oscar F. Mayer.

Simple text and photographs introduce the Sun and its characteristics.

"In this title, readers will examine the technology used by military forces during the Korean War. Engaging text introduces readers to the M46 Patton tank, automatic and semiautomatic rifles, rocket launchers, cold weather uniforms, MiG-15 and F-86 Sabre aircraft, helicopters, MASH units, and the roles they played in military campaigns. A short history of the war is also included."--Amazon.com.