Download Add to Favorites Add to Folder creative writing children's book activities classroom tools language arts and writing vocabulary Create new folderCREATE NEW FOLDER Share Students explore how forces (such as gravity and inertia) act on machines. Authored by: Scott Foresman, an imprint of Pearson Grade: 4 Subjects: Force and Motion Machines Language Arts and Writing Gravity Motion and Energy (Mechanics) Physics Science + show tags TYPE: Worksheets