v Reviewers The authors and publisher wish to thank the following industry and teaching professionals for their valuable input into the development of Technology: Engineering Our World. Christopher Arps Oshkosh West High School Oshkosh, WI Michael Berkeihiser Unionville High School Kennett Square, PA Michael J. Cono, Jr. Vickery Creek Middle School Cumming, GA Donald Cox Horace Maynard Middle School Maynardville, TN David Gluckner Cleveland High School Cleveland, TN Bill Hamrick Bayonet Point Middle School New Port Richey, FL Frank W. Holthouse Leyden High Schools Franklin Park, IL Thomas Jennings, Jr. Freehold Township High School Freehold, NJ Crystal Lindsay The Learning Center New Caney, TX Richard Lorenzen Fountain-Fort Carson High School Fountain, CO Kyle Marsh Twin Lakes High School Monticello, IN Audrea Moyers McCallum High School Austin, TX Matthew S. Putman Westfi eld High School Westfi eld, IN Hon J. Teo New York City College of Technology Brooklyn, NY Keith E. Thomas Academy of Technology, Engineering, Math and Science (ATEMS) Abilene, TX Joanne M. Trombley West Chester Middle School Glenmoore, PA Shyla Vire Waxahachie High School/Waxahachie ISD Waxahachie, TX Jon Welsch North Forsyth Middle School Cumming, GA Brantley Wilson Beaufort Jasper Academy for Career Excellence Beaufort, SC Teddy Wyatt Tulsa Technology Center Tulsa, OK Nicholas Yates Patterson High School Baltimore, MD Timothy J. Zavacki Hillsborough High School Hillsborough, NJ