This document provides instructions for a cell observation lab activity where students will examine onion skin cells under a microscope and identify cellular organelles. The activity involves placing onion skin in iodine on a microscope slide, observing it under the microscope, and drawing and labeling observations of structures like the cell wall, nucleus, and cytoplasm. Students will then examine additional prepared microscope slides and take notes in their science notebook. The goal is for students to understand the specific functions of cellular organelles by identifying their structures.