Share this Page Robert Crowther 1 Total Resources 1 Books Books by Robert Crowther 1 Sort by Number of Resources Number of Awards Book Title Year Published Word Count Reading Level: ATOS® Reading Level: Lexile® Add Multiple Titles to Reading List Browse books by Robert Crowther Amazing Pop-Up Big Machines by Robert Crowther 2 Resources Add to Reading List Share this Book Images courtesy of publishers, organizations, and sometimes their Twitter handles.