Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem
| Learning Target
(HS-LS2-4) I can use mathematical representations to support claims for the cycling of matter and the flow of energy among organisms in an ecosystem. |
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| Background
The Superb Owl! https://www.youtube.com/watch? Owls are nocturnal raptors that feast on small rodents, reptiles, and birds. If a farmer is having problems with mice or rats, a barn owl can be a big help. One pair of barn owls can catch more of these rodents than a dozen cats can. One study followed a one month old baby owl and gave it as many mice as it wanted. It swallowed 9 mice one right after another and ate 4 more only three hours later. In one year, a barn owl probably eats 2,000 rats and mice. Owls have a specialized digestive system because they cannot digest the fur, bones, or feathers of the organisms they eat. Their digestive system clumps the indigestible parts into clumps called a pellet which the owl regurgitates approximately 20 hours after it is finished eating. |
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| Guiding Questions
How are matter and energy transferred in an ecosystem? |
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| Task 1
In this lab you will be dissecting and analyzing owl pellets. The owl pellets you will be analyzing are from the common barn owl and have been sterilized. However, it is still important to sterilize the dissecting area and thoroughly wash your hands after clean-up. By dissecting owl pellets, we not only learn about the birds’ diets, but also learn about the ecosystem in which it lives. To answer the guiding question, you will be provided materials to explore via a dissection of a barn owl pellet. Your teacher will have a “tool talk” to review what the materials are and how to use it appropriately and safely. Here are required tasks that you will need to perform in your investigation:
You will need to record the data you collect from the owl pellet in a data table. Create your data table on the next page. |
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Other Observations: Task 1 Keep a tally of the different bones you find in your owl pellet after dissection. Make an educated guess about what animals you found and how many you think were consumed.
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| Task 2
Trophic Pyramids Background: https://www.youtube.com/watch? We will draw or create a google slide with a trophic pyramid that includes the owl at the top. First, draw a pyramid that shows what organisms are in each level and the amount of biomass that they take up in that ecosystem. Be sure to correctly label each trophic level. Be sure to label where the energy flows from each level. |
Lab Report Writing Checklist
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Mastery Rubric
| Section | Beginning Mastery (1) | Near Mastery (2) | Mastery (3) |
| Learning Target:
(HS-LS2-4) Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem. |
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| Topic and Content | Report lacks an understanding about the cycling of matter and flow of energy among organisms in an ecosystem and lacks sufficient relative quantities. | Report provides an adequate reference of relative quantities but does not demonstrate a comprehensive understanding about the cycling of matter and flow of energy among organisms in an ecosystem. | Report shows a comprehensive understanding about the cycling of matter and flow of energy among organisms in an ecosystem and also references relative quantities effectively supporting this concept. |
| Use of Evidence and Analysis | Report lacks application of mathematical concepts to analyze data. Additionally, no data or analysis is used to support a claim for the cycling of matter and flow of energy among organisms in an ecosystem. | Report provides an adequate application of mathematical concepts to analyze data. However, the analysis of the data is not connected to the claim for the cycling of matter and flow of energy among organisms in an ecosystem. | Report provides an appropriate application of mathematical concepts to analyze data. The analysis of the data is then used to support a claim about how the cycling of matter and flow of energy among organisms in an ecosystem. |
| Coherence and Organization | Report lacks organized evidence and evaluations to support a claim about the cycling of matter and flow of energy among organisms in an ecosystem. | Report evidence and analysis requires further organization or clarification to support a claim about the cycling of matter and flow of energy among organisms in an ecosystem. | Report uses coherently organized evidence and analysis supporting a claim about the cycling of matter and flow of energy among organisms in an ecosystem. |
| Vocabulary and Academic Language | Report shows little use of academic and domain language which hinders the development of evidence and analysis.
-APA format is not used. |
Report contains academic and domain language but also has non-academic language when needed to support evidence or analysis.
-An attempt is made to use APA format |
Report consistently makes use of accurate academic and domain language so that evidence and analysis is strengthened.
-APA format is used appropriately. |
| Exceeding Mastery (4) | |||
| In addition to mastery in all categories above, the report also includes 3 of the following elements: A connection to a local scientist or community, a counter-argument, an explanation of how the content from this report is related to content from another unit, a relationship to real-world examples or applications, additional sources, use of advanced appropriate scientific vocabulary. | |||
Requirements: As required | .doc file
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