This guided worksheet asks students to think about the relative size of structures found within the body. Used in conjunction with the Powers of Minus Ten app, students can zoom down to see cellular structures and their functions. An overview of scientific notation is included with practice problems and scaffolded exercises. A n in-app virtual scavenger hunt leads students to the various cell organelles and their functions. The steps of mitosis and the visual appearance of each stage are covered as well. A reflection piece is included as a wrap up activity.