Plant and Animal Cells - Searching for ENGAGING resources to teach cells, cell theory, and organelle functions to middle school students? Read, answer, color, label, compare, and complete a lab: all geared at learning about cells and their organelles. Read and answer questions about cell theory. Scientists included: Hooke, Schleiden, Schwann, and Virchow. Complete an analogy sheet comparing a cell to two more complex systems. Students compare each organelle (functions given) to something in a mo