BRING THE ADIRONDACKS INTO YOUR CLASSROOM
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|Grade: 7th - 12th grade
|NYS Content Area Standard:
Math, Science & Technology:
Standard 1: Analysis, Inquiry and Design
Standard 2: Information Systems
Standard 3: Mathematics
Standard 4: Science
Standard 6: Interconnectedness: Common Themes
|NYS Interdisciplinary Standard:
||Adirondack Curriculum Content Area:
MST#1 Student uses scientific inquiry to seek answers and pose questions
MST #2 Student will generate information using appropriate technologies
MST #3 Math – Students will understand mathematical reasoning using data analysis
MST#4 Understand and apply scientific concepts, principles, and theories pertaining to the physical setting and living environment.
MST #6 Students will understand the relationships and common themes that connect math, science, and technology
|Keywords: photosynthesis, pigments, scientific posters|
|Investigative Question or Issue: Why do leaves change color in the fall and are changes related to temperature?|
Challenge originally created by Tammy Morgan & Dan Mayberry.
This challenge is intended to help students understand the role of pigments in plant leaves. Student should connect this understanding with what happens as winter approaches, temperatures get colder, and leaves turn color and drop. This challenge should also help familiarize students with the scientific process. Sugar maple (Acer saccharum) is a good species to use, but other species will work. If teams choose different species then they can compare potential differences.
In preparation for this challenge the teacher should:
Author comments: Depending on the grade level, this challenge could be used to introduce basic statistical concepts like variation, by teaching how standard deviations are calculated and graphed and what they mean. The experiment can be carried out for as long in the autumn as the teacher has time. It can be done with one species, or several, or each group could look at a different deciduous species. This is a great challenge for explicitly working with ‘the process of science’.
If time is available, the teacher could involve students in searching for available resources on the topic and the selection of tree species. Student groups could present why they might choose one tree or another and what pigment concentrations they might expect to see in the fall, given what colors they see in each of the species, or the role of that species in the canopy or in a successional sequence. After data for several (3-5) species are collected, groups of students could compare a subset of species and pigment types to answer a question they have phrased and support their discussion of the results using the literature.
A Northern Forest Partnership Challenge
The color of a leaf is related to the concentrations of pigments. In teams, you will conduct a study of leaf pigment concentrations over a 1 month period in the autumn. Review the role of leaf pigments such as chlorophyll a and b, carotenoids, and anthocyanin and what happens when leaves begin to senesce in autumn, then develop some hypotheses about what you expect to happen to the leaf pigment concentrations and their relationship to temperature. Then, once or twice a week, your team will collect data on pigment concentrations. After the data are collected, graphed and analyzed, your group will produce a scientific poster (with all the parts of a scientific paper) to display and present to your classmates and other interested people.
Leaf Sampling Procedure (for each sampling time/date):
Pigment Extraction and Measuring Procedures:
2. Anthocyanin Extraction and Measuring Procedures:
|Product Quality Checklist
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|Standard/Criteria:||Points Possible:||Points Awarded:|
Title: Centered, descriptive, large enough, includes authors names
Abstract: Brief description of purpose, methods, results and conclusions (200 to 300 words typically)
Background Information (giving credit to sources – includes:
Sections are separated and clearly identified in a neat way
Visuals are helpful and aesthetically pleasing
Poster is easy to read from a 4-6 ft distance
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