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How Much is That Tree is a series of experiential projects for STEM multidisciplinary learning on the theme of valuing trees and their benefits to the ecosystem. 2nd to 5th graders (and older students) collect simple data from local (or imagined) trees and enter into the iTree calculator to obtain the dollar value of the trees contribution to the ecosystem in terms of stormwater reduction, air quality improvement, CO2 sequestration and potential energy reduction to neighboring buildings. This study is set in context with some short experiential exercises: draw My Favorite Tree, Goods from the Woods, Tree Functions and Tree Identification. Students can then continue the tree theme with STEM extensions such as modelling trees and service-based learning - such as setting up a tree nursery or caring for trees in a schoolyard.
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Tree$Projects!• My!Favorite!Tree!• Goods!from!the!Woods!• Tree!Func7ons!• Tree!Iden7fica7on!• Tree!Inventory!• Calculate!Tree!Benefits!$$!• Service!Learning!• STEM!Extensions!
Why?!• Reinforces!curriculum!
• Uses!technology!
• ProblemGbased!learning!
• ProjectGbased!learning!
• Urban!and!rural!forests!
• Social!perspec7ve!
• Value,!risks,!benefits!
• Mul7Gdisciplinary!
• Tree!biology!
• Ecology!
• Economics!
• Classifica7on!
• Quan7ta7ve!skills!
• Stewardship!
Logis2cs!Costs$and$Materials$$Minimal$Investment!• Tree!ID!books!• Diameter!�DBH�!tapes!• Cameras!• Computers!• Online!resources!
!Class$Time!• 1!hour!minimum!• 2!sessions!op7mum!
!When!• Late!March!to!October!
My$Favorite$Tree$
Goods$from$the$Woods$
Tree$Func2ons$
!
Tree$ID!!• Go!outside!• Look!at!trees!• Iden7fy!trees!• Make!leaf!albums!
Tree$Benefits!o StormGwater!Runoff!Reduc7on!
!
o Energy!Consump7on!Reduc7on!!
o Air!Quality!Improvement!!
o CO2!Sequestra7on!
o Wildlife!Habitat!Benefits!!
o Social!Benefits!
o Property!Value!!
o Timber!Value!
$$$Tree$Benefits!• Fairfax!County!es7mates!its!
trees!provide!!$54!million!of!�ecosystem!services�!annually.!(2007).!
!• Arlington!County!es7mates!
its!trees!provide!$1.8!million!in!air!pollu7on!control!and!over!$6.8!million!in!stormGwater!control!annually.!(2004)!!
• Healthy,!mature!trees!can!add!10%!to!residen7al!property!values.!
!
Tree$Inventory!
Trees at the Adele Stamp Union University of Maryland, MD 20742
Team: NCYGS participants Date: 21 July 2012
Tree # Species
Diameter at Breast Height, DBH inches
Condition Excellent, Good, Fair, Poor , Dead or Dying
1
2
3
4
Circumference$or$Diameter?$
Tree$Inventory!
Trees at the Adele Stamp Union University of Maryland, MD 20742
Team: NCYGS participants Date: 21 July 2012
Tree # Species
Diameter at Breast Height, DBH inches
Condition Excellent, Good, Fair, Poor , Dead or Dying
1 Redbud, Eastern 6 Excellent
2
3
4
Tree$Inventory!
Trees at the Adele Stamp Union University of Maryland, MD 20742
Team: NCYGS participants Date: 21 July 2012
Tree # Species
Diameter at Breast Height, DBH inches
Condition Excellent, Good, Fair, Poor , Dead or Dying
1 Redbud, Eastern 6 Excellent
2 Sycamore, American 15 Poor
3
4
Tree$Inventory!
Trees at the Adele Stamp Union University of Maryland, MD 20742
Team: NCYGS participants Date: 21 July 2012
Tree # Species
Diameter at Breast Height, DBH inches
Condition Excellent, Good, Fair, Poor , Dead or Dying
1 Redbud, Eastern 6 Excellent
2 Sycamore, American 15 Poor
3 Oak, Sawtooth 30 Good
4
Tree$Inventory!
Trees at the Adele Stamp Union University of Maryland, MD 20742
Team: NCYGS participants Date: 21 July 2012
Tree # Species
Diameter at Breast Height, DBH inches
Condition Excellent, Good, Fair, Poor , Dead or Dying
1 Redbud, Eastern 6 Excellent
2 Sycamore, American 15 Poor
3 Oak, Sawtooth 30 Good
4 Oak, Willlow 20 Excellent
$$$Tree$Benefits!Trees at the Adele Stamp Union
University of Maryland, MD 20742 Tree Benefits calculated using iTree Design
Team: NCYGS participants Date: 21 July 2012
Tree # Species
Diameter at Breast Height, DBH inches
Condition Excellent, Good, Fair, Poor , Dead or Dying
$$ Overall Benefit from iTree Design
1 Redbud, Eastern 6 Excellent 0-6
2 Sycamore, American 15 Poor 44
3 Oak, Sawtooth 30 Good 111
4 Oak, Willlow 20 Excellent 82
$$$Tree$Benefits$D$iTree!
Na2onal$Tree$Benefits$Calculator$hap://www.itreetools.org/design.php!
!
Tree # Species DBH (inches)
Stormwater Interception Savings
Energy: Cooling and Heating Savings
Air Quality Benefits
CO2 Reduction
Overall Benefits $ Annually
1 Redbud, Eastern
6 $ 3.64 $ 1.15 +(-5.30) $ 1.64 $ 0.75 About $ 2
367 gallons 8 kwh -5 therms
See online graph
102 lbs
$$$Tree$Benefits$D$iTree!
Na2onal$Tree$Benefits$Calculator$hap://www.itreetools.org/design.php!
!
Tree #
Species DBH (inches)
Stormwater Interception Savings
Energy: Cooling and Heating Savings
Air Quality Benefits
CO2 Reduction
Overall Benefits $ Annually
3 Oak, Sawtooth
30 $ 69.01 $ 12.52 + 10.22 $ 12.38 $ 7.32 About $ 111
6971 gallons
88 kwh electricity 10 therms heating fuel
See online graph
1023 lbs
$$$Tree$Benefits$D$iTree!
Na2onal$Tree$Benefits$Calculator$hap://www.itreetools.org/design.php!
!
Tree # Species DBH (inches)
Stormwater Interception Savings
Energy: Cooling and Heating Savings
Air Quality Benefits
CO2 Reduction
Overall Benefits $ Annually
4 Oak, Willow
20 $ 51.50 $ 12.25 + 23.33 (-$5.06) $ 5.08 About $87
5,202 gallons
88 kwh 22 therms
See online graph
702 lbs
!
Anima7on!of!tree!growth!
Map$e.g.$ATS!Schoolyard!Garden!
Resources:$hap://goo.gl/GuX5f!
