Introduction |
| Anchor Video |
| Concept Map |
| Project Calendar |
| Lesson Plans |
Letter to Parents |
| Assessments |
| Resources |
Modifications |
| Grant |
Names of Group Members:__________________________________________________
Date:___________________________________________________________________
School:_________________________________________________________________
Grade:__________________________________________________________________
Arrow Worms, Copepods, and Diatoms…Oh My!!!
Group Member Roles:
1.) Materials Caretaker: Collects Discover Microscope, slide, worksheets, etc.
2.) Photo Carrier: Person who gets 10 photos of different sections of a sample of plankton from teacher, returns with photos to group, and changes photos when students are done counting.
3.) Recorder: Counts the number of arrow worms on each photo, and records data
4.) Recorder: Counts the number of copepods on each photo, and records data
5.) Recorder: Counts the number of diatoms on each photo, and records data
Directions:
Each recorder will count the number of arrow worms, copepods, or diatoms on their photos. Each recorder counts their species for that section and records their data. Then the Photo Carrier changes the picture. The Recorders count again and record their data. This happens for 10 sections. The Materials Caretaker and Slide Carrier should count a few times as well, so that each student should has counted at least twice. The Recorders should be recording the number of each species on their worksheets even if they are not the ones counting. When done counting, the Materials Caretaker should collect the photos, and return these materials to the teacher. The group members then count how many diatoms, copepods, and arrow worms they have in total, and come up with ratios between the three species. Feel free to describe any other organisms you see on your slide on the back of this sheet.
Questions:
1. More or less, what is the ratio between arrow worms to copepods? Between copepods to diatoms?
2. What would a food pyramid for these 3 species look like? Who is on top? Who is on bottom? Draw food pyramid below:
3. More or less, you came up with _______ as the ratio between _________ and ________ and _________ as the ratio between ___________ and ______________. I say more or less, why? Is it exactly that ratio? Why or why not? If not, is there a factor you can multiply by so that it is exact?
4. How do you think this transcends to humans, and what we eat? In other words, if we had the same ratios between plants, animals, and us, what would happen to us if there was only half as much plants as needed for animals to eat?
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Section # |
Arrow Worms |
Copepods |
Diatoms |
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1 |
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2 |
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3 |
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4 |
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5 |
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6 |
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7 |
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8 |
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9 |
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10 |
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TOTAL: |
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Scratch work to figure out ratios: