Microscope work and other activities are used to increase students' understanding. Cardboard boxes may be used as models. Have students examine cells and cell life stages using temporary wet mounts, commercially prepared slides, or a microscope video attachment. Simulate a cell by using dialysis tubing filled with starch solution. Lugol's solution placed in water outside the tubing will diffuse into the tubing, resulting in a colour change.
Students infer the direction of particle movement.
Have students make models of mitosis and meiosis from various materials, such as Plasticine, pipe cleaners, and string. Provide students with living examples from local environments to demonstrate types of asexual reproduction, such as fission, budding, and vegetative reproduction. Students relate mitosis to processes of growth, repair, and replacement. Students can use models and posters to illustrate the differences between sexual and asexual reproduction. Set up stations where students can examine various specimens, photographs, or models of plant and animal species.