
This activity takes a look at autumn leaves as objects of aesthetic beauty and scientific interest.
For this activity, each of your students uses colorful autumn leaves they have collected to create a decorative arrangement on a sheet of waxed paper. You then cover each arrangement with another sheet of waxed paper and seal the 2 sheets together with a hot iron. The sealed arrangements can be used in placemats, mobiles, or decorations.
This activity addresses the following AP® Biology concepts:
Living systems are organized in a hierarchy of structural levels that interact.
Explain how the properties of water that result from its polarity and hydrogen bonding affect its biological function.
The hydrogen bonds between water molecules result in cohesion, adhesion, and surface tension.
Assign groups to study different types of trees, and then create a classroom forest with your groups of oaks, maples, aspens, or evergreens. Have each group talk about the bark, leaves, folklore, and other characteristics of their tree. If your campus has trees on it, allow the groups to continue their observations by creating a calendar of events for their trees, e.g., when the leaves start to fall and when all have fallen, when the buds for flowers or leaves appear in the spring, when it produces fruit, and what animals inhabit it.
Keep your students away from the hot iron and do not allow them to touch their arrangements until they are cool.
Over 50 leaves found in North America are illustrated in this oversized, full-color chart.
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