Lesson Overview: In this activity, students use a physical model to learn how slope and the density of trees (or other kinds of standing fuels) affect fire spread.

Lesson Goal: Increase students’ understanding of wildland fire spread in forests and other kinds of standing fuels.

Objectives:

• Students plan experiments and make observations to investigate the effect of one variable at a time on fire spread.
• Students use the Fire Triangle (from Unit II) to explain how slope and density of trees (or other standing fuels) affect fire spread.