Holt McDougal Earth Science Long-Term Projects Booklet with Answer Key Holt McDougal Earth Science With an emphasis on inquiry, critical thinking and problem solving, Holt McDougal Earth Science provides students with opportunities to observe and apply the scientific processes necessary for Earth science mastery. Grades: 9-12 Material Type: Teacher Materials Format: Softcover, 96 Pages ISBN-13/EAN: 9780554016214 ISBN-10: 0554016214 Product Code: 1084354 National/State: National Copyright Year: 2010