Biology

i-Tree Unit Lesson 6: Tree Adaptations

In Lesson 5: Canopy Assessment, students subtracted the annual amount of sequestered carbon dioxide from the carbon footprint of their zip code. This gave them an understanding of the “carbon balance” of their zip code, or the amount of carbon that is possible to capture by planting additional trees. In Lesson 6, students will examine which tree species are best suited for their area based on two factors that affect tree adaptations: precipitation and temperature.

i-Tree Unit Lesson 5: Canopy Assessment Lab

In Lesson 4: Carbon Cycle, students explored the ways that carbon is both produced and sequestered, and described how they would reduce carbon in the atmosphere (using text and visuals). As a follow up to calculating their personal carbon footprint in Lesson 3, students will calculate the carbon footprint of their zip code. Next, they will use the i­Tree Canopy online application to assess the area of tree canopy in their defined area and how much carbon is already being captured by the existing trees.

i-Tree Unit Lesson 1: Water Cycle and Weather

This lesson emphasizes how evaporation affects precipitation which contributes to heavy rain and storms. It lays the foundation for thinking about the ways that trees can mitigate increased weather effects in urban environments like Washington, D.C. First, students discuss their past observations of evaporation and write a hypothesis to describe this phenomenon. Next, students make entries to their lab journals based on classroom instruction of the water cycle using visuals and a NASA weather video. As a class, they label a diagram that models the stages of the water cycle.

i-Tree Unit Intro: Tree Inventory - Map Your Schoolyard

Students walk around their schoolyard to conduct a Tree Inventory that assesses land usage and the existing trees. They note the different ways that the land is being used (i.e, residential, commercial, parks) and draw these on the map in their Lab Journal. They also draw all of the existing trees on their school’s block. In addition, students collect data about each tree (i.e., evergreen or deciduous, condition of tree and the impact on the area it is growing).

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