Lesson Plan

What is DBH?

When measuring the circumference of a tree, does it matter how high you place the measuring tape? Most scholars have never considered this question, but scientists know that measurement techniques must be standardized. The 13th lesson in the series of 21 begins with developing an understanding how tree rings relate to the age of the tree, the weather, and the carbon cycle. Scholars then learn the proper way to measure DBH and apply their skills in the field.

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Discuss why it is important to identify the type of tree when writing down measurements
Classroom Considerations
  • Requires prior knowledge of calculating mean average
  • Uses tree cookies of several different sizes
  • Aligns to the National Science Education Standards, National Education Technology Standards, National Council of Teachers of Mathematics Education Standards, Climate Literacy Principles, and Energy Literacy Principles
  • Offers cross-curricular connections to geometry
  • Includes high-quality resource links for vocabulary, student resources, and further learning
  • None
Common Core