This layering is a major factor in the rich biodiversity of rainforests. Student groups illustrate different layers and explain their layer to the class. Rainforest organisms are adapted for survival in the particular microclimates of rainforests. Comparing these organisms with more familiar organisms is one way to learn their structures and functions. Science supply companies now offer seeds and kits students can use to observe the growth of rainforest plants.
Humidity is added with a spray bottle.
Beyond observing plant growth, students can compare the growing conditions with local and cultivated plants, as well as leaf transpiration rates. Illustrations of rainforest leaves are provided for students to compare the leaves. Typically temperate leaves have more variety in shape. Using a paper bag they cut out eye holes, paste on paper ears and a nose, paint it yellow with black spots, and add pipe cleaner whiskers. A tail is created by filling a nylon stocking with paper and gluing on black felt dots.