Explain that the subtractive process at the end makes a statement about the disappearing rainforest. Students will construct a three-dimensional interpretation of their plant. If your plant is small and plentiful, make several of them. If possible make an environment that it is possible to move through. Try to achieve a sense of interconnectedness and symbiosis among these organisms.
Some plants are parasitic on others.
Vines can intertwine through the whole thing. Cloth, sand, soil, etc. Special lighting in different colors can be used to simulate sunlight filtering through the trees. Sound effects can enhance the mood further. Make announcements to other classes and teachers about the project and its significance.