GREEN DOWN - OŠ Venclja Perka - News and Discussion - European Phenology Campaign
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We ran the Green Down campaign with 3rd grade students in September and October.
We chose Linden and Birch for observation. We marked four leaves on each tree with a string. Twice a week, we took measurements by using a colour scale to determine the dominant colour on each sheet. We photographed both trees with the GrowApp and entered the data into the Globe Observer program.
The students were happy to monitor the leaf colouration and participate in recording the measurements. It was exciting for them to observe how the foliage changes over time.
The activity was a great starting point to talk about the changes that happen to the trees in the fall.
Data for birch:
The birch tree has already lost two leaves. One sheet is color 2.5 Y 8/12
Data for linden:
The linden still has all its leaves, which are the color 5GY 4/8.
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