Observing Cells is an interactive Year 7 Biology lesson introducing cells, microscopes and magnification. It follows pages 4–8 of the Cells lesson booklet, using large classroom-friendly visuals, guided explanations and interactive checks. Students explore how living things are made of cells, learn the main parts of a light microscope and their functions, practise the correct focusing sequence, and calculate total magnification. Visual models include a zoom from a leaf to individual cells, Hooke’s cork observations, scientific drawing guidance, and realistic onion and cheek cell views at different magnifications. simopsis