Students are provided with a blank table and a scrambled picture and definition sheet. They must re-organize the words, pictures, and definitions in the right order. Included in this activity are the terms: atom, molecule, organelle, cell, tissue, organ, organ system, organism. Works great as an introduction to a major biology unit or even as a review. This can also be made in to a race (individual, partners, or group). A teacher answer key is provided and the original document can be modified in order to fit your class requirements!