(3) 4-6 Illustrated by Valpuri Kerttula. Where did your breakfast banana come from? How are your jeans made? How does your house have electricity? Each two-page spread illuminates these and other "journeys" with numbered steps for each process. Technologies such as cellphones, the internet, and--yes--indoor plumbing are covered. A fascinating behind-the-scenes look at items and systems readers may take for granted. Back matter would have increased the educational value.

Reviewer: Janet Dawson