Tree Measurements

• Introduction
• Introduce yourself and program specifics:
• Program length (40-45) minutes
• What is Forestry?
• Practice of managing forest.
• Uses of Wood:
• Furniture, Buildings, paper, make-up, toothpaste; It’s in more than you think…Goods from the Woods.
• Tree Measurement
• Why?
• Think about when you get measured at the doctors?
• What do they measure? And how?
• Weight and Height
• Trees are measured for many reasons including economic, health and to figure out a trees growth rate, which is related to both the previous reasons.
• Cut it down ….but you can put it back up
• Foresters are looking for volume. Πr2h - r = radius and h = height.
• How can you measure trees?
• Biltmore stick- diameter
• Caliber- Diameter of the tree
• Counting rings-how old
• Loggers tape-diameter
• Clinometer- Height (using right angle geo)
• Measuring
• Early times people used their bodies to measure distances, feet hands length of finger…
• Accuracy: All measure their desks or an area in the classroom.
• Record how many hand widths their desks are and compare to others in class. Are they different? Why might they be different or the same?
• Why is it important for everyone to use the same measurements
• Equipment and their Uses
• Logger D-Tape: How can circumference be related to diameter?
• 4½ ft.
• B/c we need one height to measure at so all measurements are the same…trees tend to be wider at the bottom.
• 3.14 in. is the measure of each interval, not one inch.
• Clinometer: How tall is this tree?
• Explain the use of this piece of equipment and allow kids to try it for themselves.
• 100 ft from tree for % side.
• Right angle geo. formula
• What do your measurements mean?
• How much trees are worth based on size : money and pollution value outside. (so even small trees have a value)
• Explain the many uses of trees, and how their measurements are important.
• Board ft.?

Tree Value Calculator (link)