FutureFit IN ? 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 test their hypothesis about the thickness of a liquid and the time it would take for a marble to fall through it. Authored by: Scott Foresman, an imprint of Pearson Grade: 3 Subjects: Science Earth Science Scientific Method + show tags TYPE: Worksheets